diff --git a/scripts/qa-navara-geo-import.mjs b/scripts/qa-navara-geo-import.mjs
new file mode 100644
index 000000000..e13bd729f
--- /dev/null
+++ b/scripts/qa-navara-geo-import.mjs
@@ -0,0 +1,339 @@
+#!/usr/bin/env node
+// UTILITIES ▸ Import on Navara under the strict network policy: GeoJSON,
+// KML, KMZ (a packed icon and a ground overlay) and GPX through the real
+// file input, each one row; Navara draws their shapes in the row colour and
+// their pins, counts what it cannot draw (the KMZ ground overlay) and says
+// so in the hint; hide, fly-to and remove work on the engine; the files
+// survive a switch to Cesium and back and draw on each engine. No file makes
+// the page request anything it names (the strict policy fails any request
+// outside the preview and the free tile cache).
+//
+//   node scripts/qa-navara-geo-import.mjs http://127.0.0.1:<PORT>/
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import sharp from 'sharp';
+import { fromDegrees } from '../src/geo/cartesian3.js';
+import { createStrict, localPreview } from './qa-strict-harness.mjs';
+
+const VIEW = { lat: 37.7694, lon: -122.4862, alt: 4200 };
+const base = localPreview(process.argv[2]);
+base.search = '?engine=navara&welcome=0';
+base.hash = `v=2&lat=${VIEW.lat}&lon=${VIEW.lon}&alt=${VIEW.alt}&heading=0&pitch=-90&roll=0&map=osm&l=`;
+const strict = createStrict({ origin: base.origin, layers: ['geo-import'] });
+const SHOTS = process.env.QA_SHOT_DIR || 'qa-shots/navara-geo-import';
+fs.mkdirSync(SHOTS, { recursive: true });
+const wait = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
+const TRAP = 'gev-qa-trap.invalid';
+
+/* ── fixtures (as scripts/qa-geo-import.mjs) ───────────────────────────── */
+const ring = [
+  [-122.511, 37.7645],
+  [-122.4545, 37.7645],
+  [-122.4545, 37.7745],
+  [-122.511, 37.7745],
+  [-122.511, 37.7645],
+];
+const geojson = JSON.stringify({
+  type: 'FeatureCollection',
+  features: [
+    {
+      type: 'Feature',
+      properties: {
+        name: 'QA park',
+        description: `<img src="https://${TRAP}/props.png">`,
+      },
+      geometry: { type: 'Polygon', coordinates: [ring] },
+    },
+    {
+      type: 'Feature',
+      properties: { name: 'QA pin' },
+      geometry: { type: 'Point', coordinates: [-122.4862, 37.7694] },
+    },
+  ],
+});
+const kml = (iconHref, overlay) => `<?xml version="1.0" encoding="UTF-8"?>
+<kml xmlns="http://www.opengis.net/kml/2.2">
+<Document>
+  <Style id="s"><IconStyle><Icon><href>${iconHref}</href></Icon></IconStyle></Style>
+  <NetworkLink><Link><href>https://${TRAP}/link.kml</href></Link></NetworkLink>
+  <Placemark><name>QA KML pin</name><styleUrl>#s</styleUrl>
+    <description><![CDATA[<img src="https://${TRAP}/balloon.png">]]></description>
+    <Point><coordinates>-122.47,37.77,0</coordinates></Point></Placemark>
+  <Placemark><name>QA KML line</name>
+    <LineString><coordinates>-122.50,37.766 -122.46,37.772</coordinates></LineString></Placemark>
+  <GroundOverlay><Icon><href>${overlay}</href></Icon>
+    <LatLonBox><north>37.77</north><south>37.76</south><east>-122.46</east><west>-122.47</west></LatLonBox></GroundOverlay>
+</Document>
+</kml>`;
+const gpx = `<?xml version="1.0" encoding="UTF-8"?>
+<gpx version="1.1" creator="qa" xmlns="http://www.topografix.com/GPX/1/1">
+  <wpt lat="37.769" lon="-122.49"><name>QA waypoint</name></wpt>
+  <trk><name>QA track</name><trkseg>
+    <trkpt lat="37.766" lon="-122.505"></trkpt><trkpt lat="37.768" lon="-122.49"></trkpt>
+  </trkseg></trk>
+</gpx>`;
+// 8×8 opaque white PNG.
+const PNG = await sharp({
+  create: { width: 8, height: 8, channels: 4, background: '#ffffff' },
+})
+  .png()
+  .toBuffer();
+function storedZip(files) {
+  const parts = [];
+  const central = [];
+  let offset = 0;
+  for (const [name, data] of files) {
+    const n = Buffer.from(name);
+    const local = Buffer.alloc(30);
+    local.writeUInt32LE(0x04034b50, 0);
+    local.writeUInt32LE(data.length, 18);
+    local.writeUInt32LE(data.length, 22);
+    local.writeUInt16LE(n.length, 26);
+    const c = Buffer.alloc(46);
+    c.writeUInt32LE(0x02014b50, 0);
+    c.writeUInt32LE(data.length, 20);
+    c.writeUInt32LE(data.length, 24);
+    c.writeUInt16LE(n.length, 28);
+    c.writeUInt32LE(offset, 42);
+    parts.push(local, n, data);
+    central.push(c, n);
+    offset += 30 + n.length + data.length;
+  }
+  const dir = Buffer.concat(central);
+  const end = Buffer.alloc(22);
+  end.writeUInt32LE(0x06054b50, 0);
+  end.writeUInt16LE(files.length, 8);
+  end.writeUInt16LE(files.length, 10);
+  end.writeUInt32LE(dir.length, 12);
+  end.writeUInt32LE(offset, 16);
+  return Buffer.concat([...parts, dir, end]);
+}
+const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'gev-qa-navara-import-'));
+const fixture = (name, data) => {
+  const file = path.join(dir, name);
+  fs.writeFileSync(file, data);
+  return file;
+};
+const FILES = [
+  fixture('park.geojson', geojson),
+  fixture(
+    'remote-bits.kml',
+    kml(`https://${TRAP}/icon.png`, `https://${TRAP}/overlay.png`),
+  ),
+  fixture(
+    'packed.kmz',
+    storedZip([
+      ['doc.kml', Buffer.from(kml('files/pin.png', 'files/overlay.png'))],
+      ['files/pin.png', PNG],
+      ['files/overlay.png', PNG],
+    ]),
+  ),
+  fixture('walk.gpx', gpx),
+];
+
+await strict.run(
+  {
+    args: [
+      '--use-angle=metal',
+      '--enable-gpu',
+      '--disable-background-timer-throttling',
+      '--disable-renderer-backgrounding',
+    ],
+  },
+  async (browser) => {
+    const page = await browser.newPage();
+    await page.setViewport({ width: 1280, height: 860 });
+    const errors = [];
+    page.on('pageerror', (error) => errors.push(error.message));
+    await page.goto(base.href);
+    const ready = async (kind) => {
+      await page.waitForFunction(
+        (k) =>
+          window.__godsEyeView?.engine?.kind === k &&
+          window.__gevGeoImport?.diagnostics().attached &&
+          !document.querySelector('#globe-engine')?.disabled &&
+          !document.querySelector('.engine-switch-frame') &&
+          document.querySelector('#loading-screen.hidden'),
+        { timeout: 120000 },
+        kind,
+      );
+      await page.evaluate(
+        () => window.__godsEyeView.styleManager.initialRestorePromise,
+      );
+    };
+    await ready('navara');
+    assert.equal(
+      await page.evaluate(() =>
+        Boolean(window.__godsEyeView.tileset || window.__GOOGLE_MAPS_API_KEY__),
+      ),
+      false,
+      'keyless preview required',
+    );
+    const state = () =>
+      page.evaluate(() => ({
+        files: window.__gevGeoImport.list(),
+        diagnostics: window.__gevGeoImport.diagnostics(),
+        rows: document.querySelectorAll('#geo-import-list .geo-import-row')
+          .length,
+        hint: document.getElementById('geo-import-hint')?.textContent || '',
+        pins: window.__godsEyeView.engine.movers
+          .list()
+          .filter(({ id }) => id.startsWith('geo-import-'))
+          .reduce((n, set) => n + set.count, 0),
+      }));
+    /** Pixels near the first file's colour (#39d0ff) on the canvas. */
+    const cyan = async () => {
+      await page.evaluate(() => window.__godsEyeView.requestRender?.('qa'));
+      await wait(900);
+      const { data, info } = await sharp(
+        await page.screenshot({
+          clip: { x: 400, y: 260, width: 480, height: 300 },
+        }),
+      )
+        .removeAlpha()
+        .raw()
+        .toBuffer({ resolveWithObject: true });
+      let n = 0;
+      for (let i = 0; i < data.length; i += info.channels) {
+        const [r, g, b] = [data[i], data[i + 1], data[i + 2]];
+        if (b > 120 && g > 90 && b - r > 50) n++;
+      }
+      return n;
+    };
+    const setAll = (visible) =>
+      page.evaluate((v) => {
+        for (const file of window.__gevGeoImport.list())
+          window.__gevGeoImport.setVisible(file.id, v);
+      }, visible);
+
+    await page.evaluate(() => {
+      const panel = document.getElementById('utilities-panel');
+      if (panel?.classList.contains('collapsed'))
+        document
+          .querySelector(
+            '.panel-collapse-btn[data-collapse-target="utilities-panel"]',
+          )
+          ?.click();
+    });
+    const input = await page.$('#geo-import-input');
+    assert.ok(input, 'the Import file input');
+    await input.uploadFile(...FILES);
+    await page.waitForFunction(
+      () =>
+        window.__gevGeoImport.list().length === 4 &&
+        !/Reading/.test(
+          document.getElementById('geo-import-hint')?.textContent || '',
+        ),
+      { timeout: 90000 },
+    );
+    const imported = await state();
+    console.log('navara import', JSON.stringify(imported));
+    await strict.check(
+      page,
+      'geo-import',
+      'GeoJSON, KML, KMZ and GPX each become one row and one drawing on Navara',
+      imported.files.length === 4 &&
+        imported.rows === 4 &&
+        imported.diagnostics.drawn === 4,
+      { files: imported.files.map((f) => f.format), rows: imported.rows },
+    );
+    // The KMZ's packed ground overlay is a rectangle Navara has no drawing
+    // for; the KML's remote one was left out of the file on import.
+    const undrawn = Object.fromEntries(
+      imported.files.map((f) => [f.name, f.undrawn]),
+    );
+    await strict.check(
+      page,
+      'geo-import',
+      'the ground overlay Navara cannot draw is counted and reported in the hint',
+      undrawn['packed.kmz'] === 1 &&
+        undrawn['park.geojson'] === 0 &&
+        undrawn['remote-bits.kml'] === 0 &&
+        undrawn['walk.gpx'] === 0 &&
+        /leaves out of packed\.kmz: 1/.test(imported.hint),
+      { undrawn, hint: imported.hint },
+    );
+    await strict.check(
+      page,
+      'geo-import',
+      'the files’ pins are drawn as Navara sprites',
+      imported.pins >= 4,
+      { pins: imported.pins },
+    );
+    // The first file is flown to after the batch; settle there.
+    await wait(3000);
+    await page.screenshot({ path: `${SHOTS}/navara-imported.png` });
+
+    for (const kind of ['navara', 'cesium', 'navara']) {
+      if (
+        (await page.evaluate(() => window.__godsEyeView.engine.kind)) !== kind
+      ) {
+        await strict.pick(page, kind);
+        await ready(kind);
+        await page.waitForFunction(
+          () => window.__gevGeoImport.diagnostics().drawn === 4,
+          { timeout: 60000 },
+        );
+        await wait(2500);
+        await page.screenshot({ path: `${SHOTS}/${kind}-after-switch.png` });
+      }
+      const shown = await cyan();
+      await setAll(false);
+      const hidden = await cyan();
+      await setAll(true);
+      console.log(kind, 'cyan', { shown, hidden });
+      await strict.check(
+        page,
+        'geo-import',
+        'the imported shapes paint the first file’s colour and stop when hidden',
+        shown - hidden > 1500,
+        { shown, hidden },
+      );
+      const kept = await state();
+      await strict.check(
+        page,
+        'geo-import',
+        'the same four files are listed and drawn on this engine',
+        kept.files.length === 4 && kept.diagnostics.drawn === 4,
+        kept.diagnostics,
+      );
+    }
+    // Fly-to on Navara goes through the engine camera.
+    const flight = await page.evaluate(
+      async (destination) => {
+        const { engine } = window.__godsEyeView;
+        engine.camera.setView({ destination });
+        const before = engine.camera.height();
+        const [first] = window.__gevGeoImport.list();
+        const ok = window.__gevGeoImport.flyTo(first.id);
+        await new Promise((r) => setTimeout(r, 2500));
+        return { ok, before, after: engine.camera.height() };
+      },
+      fromDegrees(-100, 40, 3e6),
+    );
+    await strict.check(
+      page,
+      'geo-import',
+      'Fly to a file moves the Navara camera onto it',
+      flight.ok && flight.after < flight.before / 2,
+      flight,
+    );
+    // Remove gives the drawing back.
+    await page.evaluate(() => {
+      for (const file of window.__gevGeoImport.list())
+        window.__gevGeoImport.remove(file.id);
+    });
+    const removed = await state();
+    await strict.check(
+      page,
+      'geo-import',
+      'Remove takes every file and its pins off Navara',
+      removed.files.length === 0 && removed.rows === 0 && removed.pins === 0,
+      { files: removed.files.length, pins: removed.pins },
+    );
+    assert.deepEqual(errors, []);
+    console.log('PASS Navara import of GeoJSON, KML, KMZ and GPX');
+  },
+);
diff --git a/src/app/navaraMode.js b/src/app/navaraMode.js
index aceaf8194..797ee8ba1 100644
--- a/src/app/navaraMode.js
+++ b/src/app/navaraMode.js
@@ -28,6 +28,19 @@ import { createRecentImageryPanel } from '../ui/recentImagery.js';
 // Native mesh capability stays at the composition boundary.
 const navaraViews = new WeakMap();
 
+/**
+ * An imported file's data source drawn on `engine` (UTILITIES ▸ Import); the
+ * drawing loads on first use, like the layers' Navara renderers.
+ */
+async function drawImported(engine, dataSource) {
+  const { drawImportedSource, measureImportImages } =
+    await import('../layers/shared/render/navaraStory.js');
+  const sizes = await measureImportImages(dataSource);
+  return drawImportedSource(engine, navaraViews.get(engine), dataSource, {
+    sizes,
+  });
+}
+
 /** The Navara globe module, loaded on demand. */
 const loadNavaraGlobeModule = async () =>
   (await import('../globe/navara/index.js')).createNavaraGlobe;
@@ -400,7 +413,7 @@ export async function createNavaraScene({
  * voice.
  */
 export function attachViewerlessTools(
-  { engine },
+  { engine, mapStackController = null },
   {
     data,
     operations,
@@ -468,8 +481,14 @@ export function attachViewerlessTools(
   defer(() => styleManager._clearPersistentStatusNotice?.());
   // The page session's annotation board, Draw and Import on this engine
   // (src/app/navaraTools.js).
-  const tools = { engine, views: navaraViews.get(engine) };
-  const context = { operations, placeSearch, layerSession, styleManager };
+  const tools = { engine, views: navaraViews.get(engine), mapStackController };
+  const context = {
+    operations,
+    placeSearch,
+    layerSession,
+    styleManager,
+    drawImported,
+  };
   const annotations = attachNavaraAnnotations(tools, context, {
     signal,
     defer,
diff --git a/src/app/navaraTools.js b/src/app/navaraTools.js
index e8c1b945f..c3fc1f2ab 100644
--- a/src/app/navaraTools.js
+++ b/src/app/navaraTools.js
@@ -3,7 +3,7 @@
 // with src/app/navaraMode.js, so the Cesium-mode bundle carries none of it.
 
 import { createNavaraAnnotationRenderer } from '../annotations/navaraAnnotationRenderer.js';
-import { sessionAnnotations } from './sessionTools.js';
+import { sessionAnnotations, sessionGeoImport } from './sessionTools.js';
 
 /**
  * The annotation board drawn on this Navara scene: draped areas and routes
@@ -38,7 +38,31 @@ export function attachNavaraDraw() {
   return null;
 }
 
-/** UTILITIES ▸ Import on this Navara scene; null while it has none. */
-export function attachNavaraGeoImport() {
-  return null;
+/**
+ * UTILITIES ▸ Import on this Navara scene: the session's files drawn by
+ * `drawImported(engine, dataSource)` (src/layers/shared/render/navaraStory.js,
+ * loaded by src/app/navaraMode.js), what Navara leaves out of them reported
+ * in the control's hint; drops and camera gestures on this engine's canvas.
+ * Returns the control (null on a page without it or without the view).
+ */
+export function attachNavaraGeoImport(
+  { engine, views, mapStackController },
+  { layerSession, styleManager, operations, drawImported },
+  { defer },
+) {
+  if (!views?.view || typeof drawImported !== 'function') return null;
+  const geoFileImport = sessionGeoImport({
+    layerSession,
+    styleManager,
+    operations,
+    defer,
+  });
+  geoFileImport?.attachScene({
+    engine,
+    draw: (dataSource) => drawImported(engine, dataSource),
+    navigation: styleManager,
+    subscribeMapSource: (listener) => mapStackController?.subscribe?.(listener),
+  });
+  defer(() => geoFileImport?.detachScene());
+  return geoFileImport;
 }
diff --git a/src/data/geoFileImport.js b/src/data/geoFileImport.js
index 2d444092e..62b502d4c 100644
--- a/src/data/geoFileImport.js
+++ b/src/data/geoFileImport.js
@@ -1197,14 +1197,16 @@ function checkLocalImages(doc, entries = new Map(), main = '') {
 
 // Cesium also processes KML in deferred tasks; an exception there does not
 // reject its load promise. Keep a failed file from blocking the serial queue.
-async function loadKml(doc, viewer, signal) {
+// The camera and canvas only feed network links, which sanitizing removed; a
+// globe engine without a Cesium camera (Navara) passes its canvas alone.
+async function loadKml(doc, { viewer, engine }, signal) {
   let removeError;
   try {
     return await boundedImport(
       Promise.race([
         Cesium.KmlDataSource.load(doc, {
-          camera: viewer.scene.camera,
-          canvas: viewer.scene.canvas,
+          camera: viewer?.scene.camera,
+          canvas: viewer?.scene.canvas ?? engine?.host.canvas,
           clampToGround: true,
         }),
         new Promise((_, reject) => {
@@ -1225,7 +1227,7 @@ async function loadKml(doc, viewer, signal) {
 // Resolve a static file's ground pins in batches before they are visualized.
 // Per-billboard CLAMP_TO_GROUND subscriptions scale poorly on large imports.
 const groundPins = new WeakMap();
-async function settleGroundPins(dataSource, viewer, signal) {
+async function settleGroundPins(dataSource, { viewer, engine }, signal) {
   let pins = groundPins.get(dataSource);
   if (!pins) {
     pins = [];
@@ -1264,6 +1266,31 @@ async function settleGroundPins(dataSource, viewer, signal) {
       ({ cartographic: c }) =>
         new Cesium.Cartographic(c.longitude, c.latitude, 0),
     );
+    // A globe engine without a viewer: its terrain under each pin.
+    if (!viewer && engine) {
+      for (let i = 0; i < batch.length; i++) {
+        const item = batch[i];
+        const sampled = engine.surface.terrainHeightSupported
+          ? engine.surface.terrainHeight(positions[i])
+          : undefined;
+        const ground = Number.isFinite(sampled)
+          ? sampled
+          : (item.groundHeight ?? 0);
+        item.groundHeight = ground;
+        const height = ground + item.offset;
+        item.entity.position =
+          Math.abs(height - item.cartographic.height) < 1e-6
+            ? item.original
+            : Cesium.Cartesian3.fromRadians(
+                item.cartographic.longitude,
+                item.cartographic.latitude,
+                height,
+              );
+      }
+      if (at + batch.length < pins.length)
+        await new Promise((resolve) => setTimeout(resolve, 0));
+      continue;
+    }
     const mesh =
       viewer.scene?.globe?.show === false &&
       viewer.scene?.clampToHeightSupported;
@@ -1359,14 +1386,18 @@ async function boundedImport(promise, signal) {
  * Load a ground footprint, retaining explicit KML altitude modes. Call mount after
  * adding the source; revoke owns pin and blob cleanup.
  * @param {File|Blob & {name?: string}} file
- * @param {{viewer: Cesium.Viewer, color?: string}} options `color` is a CSS color.
+ * @param {{viewer?: Cesium.Viewer, engine?: object, color?: string}} options
+ *   `color` is a CSS color. Without a viewer, `engine` (a globe engine:
+ *   Navara) supplies the ground under the pins, and the pins stay entities
+ *   for that engine's own drawing (src/layers/shared/render/navaraStory.js).
  * @returns {Promise<{dataSource: Cesium.DataSource, name: string,
  *   format: string, entityCount: number, removed: number, mount: Function, revoke: Function}>}
  */
 export async function loadGeoFile(
   file,
-  { viewer, color = '#39d0ff', signal } = {},
+  { viewer = null, engine = null, color = '#39d0ff', signal } = {},
 ) {
+  const globe = { viewer, engine };
   signal = signal
     ? AbortSignal.any([signal, AbortSignal.timeout(60_000)])
     : AbortSignal.timeout(60_000);
@@ -1449,7 +1480,7 @@ export async function loadGeoFile(
       deduplicateKmlStyles(doc);
       const normalizedSize = countKmlGeometry(doc);
       if (normalizedSize.over) throw overLimitError(normalizedSize);
-      dataSource = await loadKml(doc, viewer, signal);
+      dataSource = await loadKml(doc, globe, signal);
     }
   } catch (error) {
     revoke();
@@ -1488,7 +1519,7 @@ export async function loadGeoFile(
   }
   scrubImportedEntities(dataSource);
   try {
-    await settleGroundPins(dataSource, viewer, signal);
+    await settleGroundPins(dataSource, globe, signal);
   } catch (error) {
     revoke();
     throw error instanceof GeoImportError
@@ -1501,7 +1532,9 @@ export async function loadGeoFile(
   // already been stripped and all supported geometries are static.
   detachImportedTime(dataSource);
   try {
-    pins = createImportedPins(dataSource, viewer);
+    pins = viewer
+      ? createImportedPins(dataSource, viewer)
+      : { mount() {}, sync() {}, destroy() {} };
   } catch {
     revoke();
     throw new GeoImportError(msg('That file has invalid point graphics.'));
@@ -1519,7 +1552,7 @@ export async function loadGeoFile(
     refreshGround: (refreshSignal) =>
       settleGroundPins(
         dataSource,
-        viewer,
+        globe,
         refreshSignal
           ? AbortSignal.any([refreshSignal, AbortSignal.timeout(15_000)])
           : AbortSignal.timeout(15_000),
diff --git a/src/data/geoFileImport.test.mjs b/src/data/geoFileImport.test.mjs
index 9b147e1d2..0c7f80ec9 100644
--- a/src/data/geoFileImport.test.mjs
+++ b/src/data/geoFileImport.test.mjs
@@ -1262,3 +1262,65 @@ test('KML namespace repair ignores declaration text inside quoted attribute valu
     /note="xmlns:xsi='x'" xmlns:xsi="http:\/\/www.w3.org\/2001\/XMLSchema-instance">/,
   );
 });
+
+test('on a globe engine without a viewer the pins stay entities on the engine terrain', async () => {
+  const { createFakeEngine } = await import('../globe/testing/fakeEngine.js');
+  const previous = Cesium.PinBuilder.prototype.fromColor;
+  Cesium.PinBuilder.prototype.fromColor = () => ({
+    toDataURL: () => 'data:image/png;base64,local',
+    tagName: 'CANVAS',
+  });
+  try {
+    const engine = createFakeEngine({ kind: 'navara' });
+    engine.fake.script('terrainHeight', 321);
+    const object = {
+      type: 'FeatureCollection',
+      features: [
+        {
+          type: 'Feature',
+          properties: { name: 'Pin' },
+          geometry: { type: 'Point', coordinates: [1, 2] },
+        },
+        {
+          type: 'Feature',
+          geometry: {
+            type: 'LineString',
+            coordinates: [
+              [1, 2],
+              [2, 3],
+            ],
+          },
+        },
+      ],
+    };
+    const loaded = await loadGeoFile(
+      new File([JSON.stringify(object)], 'pins.geojson'),
+      { engine },
+    );
+    const entities = loaded.dataSource.entities.values;
+    assert.equal(entities.length, 2, 'no Cesium billboard collection');
+    assert.equal(loaded.dataSource.importedBillboards, undefined);
+    const [pin] = entities.filter((entity) => entity.billboard);
+    assert.ok(
+      Math.abs(
+        Cesium.Cartographic.fromCartesian(
+          pin.position.getValue(Cesium.JulianDate.now()),
+        ).height - 321,
+      ) < 1e-3,
+    );
+    // A later ground refresh reads the engine again.
+    engine.fake.script('terrainHeight', 50);
+    await loaded.refreshGround();
+    assert.ok(
+      Math.abs(
+        Cesium.Cartographic.fromCartesian(
+          pin.position.getValue(Cesium.JulianDate.now()),
+        ).height - 50,
+      ) < 1e-3,
+    );
+    loaded.mount();
+    loaded.revoke();
+  } finally {
+    Cesium.PinBuilder.prototype.fromColor = previous;
+  }
+});
diff --git a/src/i18n/locales/ar.json b/src/i18n/locales/ar.json
index 8e5dcd274..ebba538d5 100644
--- a/src/i18n/locales/ar.json
+++ b/src/i18n/locales/ar.json
@@ -2230,6 +2230,7 @@
     "other": "تعذّرت إضافة {count} ملف ({name}: {error})"
   },
   "Some KML content was left out.": "أُغفل جزء من محتوى KML.",
+  "Map objects this engine leaves out of {name}: {count}.": "عناصر الخريطة من {name} التي لا يعرضها هذا المحرك: {count}.",
   "Press on the ground, not the sky": "اضغط على الأرض لا على السماء",
   "Drag to size the box": "اسحب لتحديد حجم المنطقة",
   "light {source} to use your {name} key": "فعّل {source} لاستخدام مفتاح {name} الخاص بك",
diff --git a/src/i18n/locales/de.json b/src/i18n/locales/de.json
index 4ea1833ad..975fd831a 100644
--- a/src/i18n/locales/de.json
+++ b/src/i18n/locales/de.json
@@ -2118,6 +2118,7 @@
     "other": "{count} Dateien konnten nicht hinzugefügt werden ({name}: {error})"
   },
   "Some KML content was left out.": "Einige KML-Inhalte wurden ausgelassen.",
+  "Map objects this engine leaves out of {name}: {count}.": "Kartenobjekte aus {name}, die diese Engine nicht darstellt: {count}.",
   "Press on the ground, not the sky": "Auf den Boden klicken, nicht in den Himmel",
   "Drag to size the box": "Ziehen, um die Größe des Bereichs festzulegen",
   "light {source} to use your {name} key": "{source} einschalten, um den eigenen {name}-Schlüssel zu nutzen",
diff --git a/src/i18n/locales/es.json b/src/i18n/locales/es.json
index 599a9ddc3..7fe55f7fe 100644
--- a/src/i18n/locales/es.json
+++ b/src/i18n/locales/es.json
@@ -2196,6 +2196,7 @@
     "other": "No se pudieron añadir {count} archivos ({name}: {error})"
   },
   "Some KML content was left out.": "Se omitió parte del contenido KML.",
+  "Map objects this engine leaves out of {name}: {count}.": "Objetos del mapa de {name} que este motor no muestra: {count}.",
   "GNSS Integrity": "Integridad GNSS",
   "Show your own GeoJSON, KML, KMZ or GPX files on the globe (or drop them onto it). File bytes stay on this device; overlays can appear in map screenshots shared with voice.": "Muestra en el globo tus propios archivos GeoJSON, KML, KMZ o GPX (o suéltalos sobre él). Los archivos no salen de este dispositivo; las capas pueden aparecer en capturas del mapa compartidas con la voz.",
   "Import": "Importar",
diff --git a/src/i18n/locales/fr.json b/src/i18n/locales/fr.json
index f7646e24a..ab7275784 100644
--- a/src/i18n/locales/fr.json
+++ b/src/i18n/locales/fr.json
@@ -1790,6 +1790,7 @@
     "other": "{count} fichiers n'ont pas pu être ajoutés ({name} : {error})"
   },
   "Some KML content was left out.": "Une partie du contenu KML a été ignorée.",
+  "Map objects this engine leaves out of {name}: {count}.": "Objets de carte de {name} que ce moteur n’affiche pas : {count}.",
   "Press on the ground, not the sky": "Appuyez sur le sol, pas sur le ciel",
   "Drag to size the box": "Faites glisser pour dimensionner la zone",
   "light {source} to use your {name} key": "activez {source} pour utiliser votre clé {name}",
diff --git a/src/i18n/locales/it.json b/src/i18n/locales/it.json
index 3fb3702f0..fa53ccc52 100644
--- a/src/i18n/locales/it.json
+++ b/src/i18n/locales/it.json
@@ -1790,6 +1790,7 @@
     "other": "Impossibile aggiungere {count} file ({name}: {error})"
   },
   "Some KML content was left out.": "Una parte del contenuto KML è stata esclusa.",
+  "Map objects this engine leaves out of {name}: {count}.": "Oggetti della mappa di {name} che questo motore non mostra: {count}.",
   "Press on the ground, not the sky": "Premi sul terreno, non sul cielo",
   "Drag to size the box": "Trascina per dimensionare il riquadro",
   "light {source} to use your {name} key": "attiva {source} per usare la tua chiave {name}",
diff --git a/src/i18n/locales/ja.json b/src/i18n/locales/ja.json
index b49b8ea89..6d21f5ab5 100644
--- a/src/i18n/locales/ja.json
+++ b/src/i18n/locales/ja.json
@@ -1728,6 +1728,7 @@
     "other": "{count}個のファイルを追加できませんでした（{name}：{error}）"
   },
   "Some KML content was left out.": "KMLの一部の内容は読み込まれませんでした。",
+  "Map objects this engine leaves out of {name}: {count}.": "このエンジンで表示されない {name} の地図オブジェクト: {count}。",
   "Press on the ground, not the sky": "空ではなく地表を押してください",
   "Drag to size the box": "ドラッグして範囲の大きさを決めてください",
   "light {source} to use your {name} key": "{source}をオンにして{name}キーを使う",
diff --git a/src/i18n/locales/pt.json b/src/i18n/locales/pt.json
index 4db98adaf..862a98a39 100644
--- a/src/i18n/locales/pt.json
+++ b/src/i18n/locales/pt.json
@@ -1790,6 +1790,7 @@
     "other": "Não foi possível adicionar {count} arquivos ({name}: {error})"
   },
   "Some KML content was left out.": "Parte do conteúdo KML foi deixada de fora.",
+  "Map objects this engine leaves out of {name}: {count}.": "Objetos do mapa de {name} que este motor não mostra: {count}.",
   "Press on the ground, not the sky": "Pressione no chão, não no céu",
   "Drag to size the box": "Arraste para definir o tamanho da área",
   "light {source} to use your {name} key": "ative {source} para usar sua chave do {name}",
diff --git a/src/i18n/locales/ru.json b/src/i18n/locales/ru.json
index 42e92d7fa..22e0ff578 100644
--- a/src/i18n/locales/ru.json
+++ b/src/i18n/locales/ru.json
@@ -2233,6 +2233,7 @@
     "other": "Не удалось добавить {count} файла ({name}: {error})"
   },
   "Some KML content was left out.": "Часть содержимого KML пропущена.",
+  "Map objects this engine leaves out of {name}: {count}.": "Объектов из {name}, которые этот движок не показывает: {count}.",
   "GNSS Integrity": "Целостность GNSS",
   "Show your own GeoJSON, KML, KMZ or GPX files on the globe (or drop them onto it). File bytes stay on this device; overlays can appear in map screenshots shared with voice.": "Показать на глобусе свои файлы GeoJSON, KML, KMZ или GPX (или перетащите их на глобус). Содержимое файлов остаётся на этом устройстве; наложения могут попасть в снимки карты, которые передаются голосовому ассистенту.",
   "Import": "Импорт",
diff --git a/src/i18n/locales/uk.json b/src/i18n/locales/uk.json
index 321988529..c9121e0cb 100644
--- a/src/i18n/locales/uk.json
+++ b/src/i18n/locales/uk.json
@@ -1820,6 +1820,7 @@
     "other": "Не вдалося додати {count} файлу ({name}: {error})"
   },
   "Some KML content was left out.": "Частину вмісту KML пропущено.",
+  "Map objects this engine leaves out of {name}: {count}.": "Обʼєктів із {name}, які цей рушій не показує: {count}.",
   "Press on the ground, not the sky": "Натисніть на землю, а не на небо",
   "Drag to size the box": "Потягніть, щоб задати розмір області",
   "light {source} to use your {name} key": "увімкніть {source}, щоб використати свій ключ {name}",
diff --git a/src/i18n/locales/zh-CN.json b/src/i18n/locales/zh-CN.json
index 39b997495..6ad47accf 100644
--- a/src/i18n/locales/zh-CN.json
+++ b/src/i18n/locales/zh-CN.json
@@ -1705,6 +1705,7 @@
     "other": "{count} 个文件无法添加（{name}：{error}）"
   },
   "Some KML content was left out.": "部分 KML 内容未被导入。",
+  "Map objects this engine leaves out of {name}: {count}.": "此引擎未显示的 {name} 地图对象：{count}。",
   "Press on the ground, not the sky": "请按在地面，而不是天空",
   "Drag to size the box": "拖动以调整框选大小",
   "light {source} to use your {name} key": "开启 {source} 以使用你的 {name} 密钥",
diff --git a/src/i18n/locales/zh-Hant.json b/src/i18n/locales/zh-Hant.json
index 4e605f49b..5ee8bf580 100644
--- a/src/i18n/locales/zh-Hant.json
+++ b/src/i18n/locales/zh-Hant.json
@@ -1695,6 +1695,7 @@
     "other": "{count} 個文件無法添加（{name}：{error}）"
   },
   "Some KML content was left out.": "部分 KML 內容未被導入。",
+  "Map objects this engine leaves out of {name}: {count}.": "此引擎未顯示的 {name} 地圖對象：{count}。",
   "Press on the ground, not the sky": "請按在地面，而不是天空",
   "Drag to size the box": "拖動以調整框選大小",
   "light {source} to use your {name} key": "開啟 {source} 以使用你的 {name} 密鑰",
diff --git a/src/layers/shared/render/navaraStory.js b/src/layers/shared/render/navaraStory.js
index ba1b99eac..1bc60af42 100644
--- a/src/layers/shared/render/navaraStory.js
+++ b/src/layers/shared/render/navaraStory.js
@@ -171,3 +171,404 @@ export function drawStorySource(engine, { view, NavaraColor }, data) {
     },
   };
 }
+
+// Graphics an imported file (UTILITIES ▸ Import) may carry that Navara does
+// not draw; each one present is counted and reported.
+const UNDRAWN_GRAPHICS = Object.freeze([
+  'label',
+  'model',
+  'rectangle',
+  'wall',
+  'ellipse',
+  'ellipsoid',
+  'corridor',
+  'box',
+  'cylinder',
+  'path',
+  'plane',
+  'polylineVolume',
+  'tileset',
+]);
+const DEGREES = 180 / Math.PI;
+// Unique mover set ids for imported files.
+let importSets = 0;
+const css = (c) =>
+  '#' +
+  [c.red, c.green, c.blue]
+    .map((v) =>
+      Math.round(Math.max(0, Math.min(1, v)) * 255)
+        .toString(16)
+        .padStart(2, '0'),
+    )
+    .join('');
+const lonLat = (position) => {
+  const c = position && geo.cartographic.fromCartesian(position);
+  return c && Number.isFinite(c.longitude) && Number.isFinite(c.latitude)
+    ? [c.longitude * DEGREES, c.latitude * DEGREES]
+    : null;
+};
+const ringOf = (positions) => {
+  const ring = (positions ?? []).map(lonLat).filter(Boolean);
+  if (ring.length >= 3) {
+    const [first] = ring;
+    const last = ring[ring.length - 1];
+    if (first[0] !== last[0] || first[1] !== last[1]) ring.push([...first]);
+  }
+  return ring;
+};
+const colorOf = (material, fallback) => {
+  const value = val(material);
+  return value?.color ?? val(material?.color) ?? fallback;
+};
+
+/**
+ * The plan for an imported data source on Navara, as plain data: GeoJSON
+ * features grouped by paint (`fills` and `lines`: Map of style key →
+ * { color: '#rrggbb', opacity, width?, features }), point sprites (`points`)
+ * and billboards grouped by image (`images`: Map of image key →
+ * { image, sizePx, items }), and what is left out (`undrawn`: graphic kind →
+ * count; `drawn`: entities with something drawn).
+ */
+export function planImportedSource(dataSource, { sizes = new Map() } = {}) {
+  const fills = new Map();
+  const lines = new Map();
+  const points = [];
+  const images = new Map();
+  const undrawn = {};
+  let drawn = 0;
+  const group = (map, key, entry) => {
+    let target = map.get(key);
+    if (!target) map.set(key, (target = { ...entry, features: [] }));
+    return target;
+  };
+  for (const entity of dataSource.entities.values) {
+    if (val(entity.show) === false) continue;
+    let any = false;
+    const polygon = entity.polygon;
+    if (polygon && val(polygon.fill) !== false) {
+      const hierarchy = val(polygon.hierarchy);
+      const outer = ringOf(hierarchy?.positions);
+      if (outer.length >= 4) {
+        const holes = (hierarchy.holes ?? [])
+          .map((hole) => ringOf(hole?.positions))
+          .filter((ring) => ring.length >= 4);
+        const color = colorOf(polygon.material, null);
+        const fill = color ? css(color) : '#ffffff';
+        const opacity = color?.alpha ?? 1;
+        group(fills, `${fill}|${opacity.toFixed(3)}`, {
+          color: fill,
+          opacity,
+        }).features.push({
+          type: 'Feature',
+          properties: {},
+          geometry: { type: 'Polygon', coordinates: [outer, ...holes] },
+        });
+        any = true;
+      }
+    }
+    const polyline = entity.polyline;
+    if (polyline) {
+      const path = (val(polyline.positions) ?? []).map(lonLat).filter(Boolean);
+      if (path.length >= 2) {
+        const color = colorOf(polyline.material, null);
+        const stroke = color ? css(color) : '#ffffff';
+        const opacity = color?.alpha ?? 1;
+        const width = Number(val(polyline.width)) || 1;
+        group(lines, `${stroke}|${opacity.toFixed(3)}|${width}`, {
+          color: stroke,
+          opacity,
+          width,
+        }).features.push({
+          type: 'Feature',
+          properties: {},
+          geometry: { type: 'LineString', coordinates: path },
+        });
+        any = true;
+      }
+    }
+    const position = val(entity.position);
+    if (position && entity.billboard && val(entity.billboard.image)) {
+      const raw = val(entity.billboard.image);
+      // A URL (a Cesium Resource's too), else a canvas; one sprite set per
+      // image (Cesium's pin builder hands every marker of a colour the same
+      // canvas).
+      const image =
+        typeof raw === 'string'
+          ? raw
+          : typeof raw?.url === 'string'
+            ? raw.url
+            : typeof raw?.getContext === 'function'
+              ? raw
+              : typeof raw?.src === 'string'
+                ? raw.src
+                : null;
+      if (!image) {
+        undrawn.billboard = (undrawn.billboard ?? 0) + 1;
+        continue;
+      }
+      const natural = sizes.get(image);
+      const width =
+        Number(val(entity.billboard.width)) ||
+        Number(image.width) ||
+        natural?.width ||
+        32;
+      const height =
+        Number(val(entity.billboard.height)) ||
+        Number(image.height) ||
+        natural?.height ||
+        width;
+      const entry = group(images, image, {
+        image,
+        sizePx: Math.max(width, height),
+      });
+      const tint = val(entity.billboard.color);
+      entry.features.push({
+        entity,
+        position,
+        scale: Number(val(entity.billboard.scale)) || 1,
+        color: tint ? rgba(tint) : [1, 1, 1, 1],
+      });
+      any = true;
+    } else if (position && entity.point) {
+      const p = entity.point;
+      const color = val(p.color);
+      const outline = val(p.outlineColor);
+      points.push({
+        entity,
+        position,
+        sizePx: Number(val(p.pixelSize)) || 1,
+        color: color ? rgba(color) : [1, 1, 1, 1],
+        outline: outline && Number(val(p.outlineWidth)) ? rgba(outline) : null,
+      });
+      any = true;
+    }
+    for (const kind of UNDRAWN_GRAPHICS) {
+      const graphic = entity[kind];
+      if (!graphic || val(graphic.show) === false) continue;
+      if (kind === 'label' && !val(graphic.text)) continue;
+      undrawn[kind] = (undrawn[kind] ?? 0) + 1;
+    }
+    if (any) drawn++;
+  }
+  return { fills, lines, points, images, undrawn, drawn };
+}
+
+/**
+ * Draw an imported file's data source (UTILITIES ▸ Import) on Navara: its
+ * polygons and lines as clamped GeoJSON vector layers (one per paint), its
+ * points as circle sprites and its billboards as sprites of their own image.
+ * Labels, models and the other graphics Navara has no drawing for are left
+ * out and counted in `report`. `setShow` follows the row's visibility;
+ * `refresh` re-reads the pins' positions after a ground refresh.
+ */
+export function drawImportedSource(
+  engine,
+  { view },
+  dataSource,
+  { sizes } = {},
+) {
+  const plan = planImportedSource(dataSource, { sizes });
+  const layers = [];
+  const sets = [];
+  let shown = dataSource.show !== false;
+  const layerStyle = (kind, entry) =>
+    kind === 'polygon'
+      ? {
+          polygon: {
+            color: Number.parseInt(entry.color.slice(1), 16),
+            show: shown,
+            clampToGround: true,
+            transparent: true,
+            opacity: entry.opacity,
+          },
+        }
+      : {
+          polyline: {
+            color: Number.parseInt(entry.color.slice(1), 16),
+            show: shown,
+            clampToGround: true,
+            width: entry.width,
+            transparent: true,
+            opacity: entry.opacity,
+          },
+        };
+  const id = (kind) => `geo-import-${kind}-${++importSets}`;
+  try {
+    for (const [kind, groups] of [
+      ['polygon', plan.fills],
+      ['polyline', plan.lines],
+    ])
+      for (const entry of groups.values()) {
+        const source = view.addSource({
+          type: 'geojson',
+          data: { type: 'FeatureCollection', features: entry.features },
+        });
+        const record = { kind, entry, source, layer: null };
+        layers.push(record);
+        record.layer = view.addLayer({
+          type: 'vector',
+          source,
+          ...layerStyle(kind, entry),
+        });
+      }
+    if (plan.points.length) {
+      const set = engine.movers.createSet({
+        id: id('points'),
+        kind: 'sprite',
+        capacity: plan.points.length * 2,
+        pickable: false,
+        depthTest: 'always',
+        sprite: { sizePx: 64, atlas: circleAtlas() },
+      });
+      const write = () => {
+        let at = 0;
+        for (const item of plan.points) {
+          const scale = item.sizePx / 58;
+          set.set(at++, {
+            position: item.position,
+            cell: 'fill',
+            color: item.color,
+            scale,
+            show: true,
+          });
+          if (item.outline)
+            set.set(at++, {
+              position: item.position,
+              cell: 'rim',
+              color: item.outline,
+              scale,
+              show: true,
+            });
+        }
+        return at;
+      };
+      sets.push({ set, count: write(), write });
+    }
+    for (const entry of plan.images.values()) {
+      const { image } = entry;
+      const set = engine.movers.createSet({
+        id: id('pins'),
+        kind: 'sprite',
+        capacity: entry.features.length,
+        pickable: false,
+        depthTest: 'always',
+        sprite: {
+          sizePx: entry.sizePx,
+          atlas: {
+            ...(typeof image === 'string' ? { url: image } : { canvas: image }),
+            cells: { image: [0, 0, 1, 1] },
+          },
+        },
+      });
+      const write = () => {
+        entry.features.forEach((item, index) =>
+          set.set(index, {
+            position: item.position,
+            cell: 'image',
+            color: item.color,
+            scale: item.scale,
+            show: true,
+          }),
+        );
+        return entry.features.length;
+      };
+      sets.push({ set, count: write(), write });
+    }
+    for (const record of sets) {
+      record.set.setCount(shown ? record.count : 0);
+      record.set.commit();
+    }
+  } catch (error) {
+    release();
+    throw error;
+  }
+  engine.render.request('geo-import');
+  function release() {
+    for (const { layer, source } of layers.splice(0)) {
+      try {
+        layer?.delete();
+        source.delete();
+      } catch {
+        /* the view went first */
+      }
+    }
+    for (const { set } of sets.splice(0)) set.destroy();
+  }
+  const undrawn = Object.values(plan.undrawn).reduce((n, c) => n + c, 0);
+  return {
+    report: { drawn: plan.drawn, undrawn, kinds: { ...plan.undrawn } },
+    setShow(show) {
+      if (show === shown) return;
+      shown = show;
+      for (const { kind, entry, source, layer } of layers)
+        layer.update({ type: 'vector', source, ...layerStyle(kind, entry) });
+      for (const record of sets) {
+        record.set.setCount(shown ? record.count : 0);
+        record.set.commit();
+      }
+      engine.render.request('geo-import');
+    },
+    /** The pins' positions moved onto refreshed ground heights. */
+    refresh() {
+      const items = [
+        ...plan.points,
+        ...[...plan.images.values()].flatMap((entry) => entry.features),
+      ];
+      for (const item of items)
+        item.position = val(item.entity.position) ?? item.position;
+      for (const record of sets) {
+        record.count = record.write();
+        record.set.setCount(shown ? record.count : 0);
+        record.set.commit();
+      }
+      engine.render.request('geo-import');
+    },
+    destroy() {
+      release();
+      engine.render.request('geo-import');
+    },
+  };
+}
+
+/**
+ * The natural sizes of an imported file's pin images (the file's own, as
+ * data: or blob: URLs), so each pin draws at the size Cesium gives it.
+ * Remote URLs are never loaded. Resolves with a Map of URL → { width, height }.
+ */
+export async function measureImportImages(
+  dataSource,
+  { timeoutMs = 2000, createImage = () => new Image() } = {},
+) {
+  const urls = new Set();
+  for (const entity of dataSource.entities.values) {
+    const image = val(entity.billboard?.image);
+    const url = typeof image === 'string' ? image : image?.url;
+    if (typeof url === 'string' && /^(data|blob):/.test(url)) urls.add(url);
+  }
+  const sizes = new Map();
+  await Promise.all(
+    [...urls].map(async (url) => {
+      const image = createImage();
+      image.src = url;
+      let timer;
+      try {
+        await Promise.race([
+          image.decode(),
+          new Promise((_, reject) => {
+            timer = setTimeout(reject, timeoutMs);
+          }),
+        ]);
+        if (image.naturalWidth > 0)
+          sizes.set(url, {
+            width: image.naturalWidth,
+            height: image.naturalHeight,
+          });
+      } catch {
+        /* drawn at the default size */
+      } finally {
+        clearTimeout(timer);
+      }
+    }),
+  );
+  return sizes;
+}
diff --git a/src/layers/shared/render/navaraStory.test.mjs b/src/layers/shared/render/navaraStory.test.mjs
new file mode 100644
index 000000000..9cc7cf83b
--- /dev/null
+++ b/src/layers/shared/render/navaraStory.test.mjs
@@ -0,0 +1,192 @@
+import '../../../testSupport/registerDom.mjs';
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import * as Cesium from 'cesium';
+import { createFakeEngine } from '../../../globe/testing/fakeEngine.js';
+import {
+  drawImportedSource,
+  measureImportImages,
+  planImportedSource,
+} from './navaraStory.js';
+
+// happy-dom has no 2D canvas; the circle atlas only needs to draw.
+globalThis.HTMLCanvasElement.prototype.getContext = () => ({
+  beginPath() {},
+  arc() {},
+  fill() {},
+  stroke() {},
+});
+
+const degrees = (...pairs) => Cesium.Cartesian3.fromDegreesArray(pairs.flat());
+
+/** A file's data source as Cesium's loaders build one. */
+function importedSource() {
+  const source = new Cesium.CustomDataSource('file');
+  const amber = Cesium.Color.fromCssColorString('#ffb547');
+  source.entities.add({
+    polygon: {
+      hierarchy: new Cesium.PolygonHierarchy(
+        degrees([0, 0], [1, 0], [1, 1], [0, 1]),
+        [
+          new Cesium.PolygonHierarchy(
+            degrees([0.2, 0.2], [0.4, 0.2], [0.4, 0.4]),
+          ),
+        ],
+      ),
+      material: amber.withAlpha(0.25),
+    },
+  });
+  source.entities.add({
+    polyline: { positions: degrees([0, 0], [2, 2]), width: 3, material: amber },
+  });
+  source.entities.add({
+    polyline: { positions: degrees([1, 0], [2, 1]), width: 3, material: amber },
+  });
+  source.entities.add({
+    position: Cesium.Cartesian3.fromDegrees(0.5, 0.5),
+    point: { pixelSize: 10, color: Cesium.Color.RED },
+  });
+  // Two pins sharing one image, one with a label Navara cannot draw.
+  for (const lon of [3, 4])
+    source.entities.add({
+      position: Cesium.Cartesian3.fromDegrees(lon, 0),
+      billboard: { image: 'data:image/png;base64,AAAA', scale: 0.5 },
+      ...(lon === 3 ? { label: { text: 'Pin' } } : {}),
+    });
+  source.entities.add({
+    position: Cesium.Cartesian3.fromDegrees(5, 0),
+    model: { uri: 'model.glb' },
+  });
+  source.entities.add({
+    show: false,
+    position: Cesium.Cartesian3.fromDegrees(6, 0),
+    point: { pixelSize: 4 },
+  });
+  return source;
+}
+
+function fakeView() {
+  const sources = [];
+  const layers = [];
+  return {
+    sources,
+    layers,
+    view: {
+      addSource(config) {
+        const source = {
+          config,
+          deleted: false,
+          delete: () => (source.deleted = true),
+        };
+        sources.push(source);
+        return source;
+      },
+      addLayer(config) {
+        const layer = {
+          config,
+          updates: [],
+          deleted: false,
+          update: (next) => layer.updates.push(next),
+          delete: () => (layer.deleted = true),
+        };
+        layers.push(layer);
+        return layer;
+      },
+    },
+  };
+}
+
+test('an imported file plans fills, lines, points and pins, and counts what Navara leaves out', () => {
+  const plan = planImportedSource(importedSource());
+  assert.equal(plan.fills.size, 1);
+  const [fill] = plan.fills.values();
+  assert.equal(fill.color, '#ffb547');
+  assert.ok(Math.abs(fill.opacity - 0.25) < 1e-6);
+  const [polygon] = fill.features;
+  assert.equal(polygon.geometry.coordinates.length, 2, 'outer ring and hole');
+  assert.deepEqual(
+    polygon.geometry.coordinates[0][0].map((v) => Math.round(v)),
+    polygon.geometry.coordinates[0].at(-1).map((v) => Math.round(v)),
+    'rings close',
+  );
+  assert.equal(plan.lines.size, 1, 'lines of one paint share a group');
+  assert.equal([...plan.lines.values()][0].features.length, 2);
+  assert.equal(plan.points.length, 1);
+  assert.equal(plan.images.size, 1, 'pins sharing an image share a set');
+  assert.equal([...plan.images.values()][0].features.length, 2);
+  assert.deepEqual(plan.undrawn, { label: 1, model: 1 });
+  assert.equal(plan.drawn, 6, 'the hidden point is not drawn');
+});
+
+test('the Navara drawing builds vector layers and sprite sets, follows the row and lets go', () => {
+  const engine = createFakeEngine({ kind: 'navara' });
+  const { view, sources, layers } = fakeView();
+  const drawing = drawImportedSource(engine, { view }, importedSource());
+  assert.deepEqual(drawing.report, {
+    drawn: 6,
+    undrawn: 2,
+    kinds: { label: 1, model: 1 },
+  });
+  assert.equal(sources.length, 2);
+  assert.deepEqual(
+    layers.map((layer) =>
+      Object.keys(layer.config).filter((k) => k !== 'type' && k !== 'source'),
+    ),
+    [['polygon'], ['polyline']],
+  );
+  assert.equal(layers[0].config.polygon.clampToGround, true);
+  assert.equal(layers[0].config.polygon.color, 0xffb547);
+  assert.equal(layers[1].config.polyline.width, 3);
+  const sets = engine.movers.list();
+  assert.deepEqual(
+    sets.map(({ count }) => count).sort(),
+    [1, 2],
+    'one point (no outline) and two pins',
+  );
+  drawing.setShow(false);
+  assert.equal(layers[0].updates.at(-1).polygon.show, false);
+  assert.ok(engine.movers.list().every(({ count }) => count === 0));
+  drawing.setShow(true);
+  assert.deepEqual(
+    engine.movers
+      .list()
+      .map(({ count }) => count)
+      .sort(),
+    [1, 2],
+  );
+  drawing.refresh();
+  drawing.destroy();
+  assert.ok(sources.every((s) => s.deleted) && layers.every((l) => l.deleted));
+  assert.equal(engine.movers.list().length, 0);
+});
+
+test('pin images are measured from the file itself, never fetched from elsewhere', async () => {
+  const source = new Cesium.CustomDataSource('file');
+  for (const image of [
+    'data:image/png;base64,AAAA',
+    'blob:http://127.0.0.1/abc',
+    'https://example.invalid/icon.png',
+  ])
+    source.entities.add({
+      position: Cesium.Cartesian3.fromDegrees(0, 0),
+      billboard: { image },
+    });
+  const loaded = [];
+  const sizes = await measureImportImages(source, {
+    createImage: () => {
+      const image = {
+        naturalWidth: 12,
+        naturalHeight: 20,
+        decode: async () => loaded.push(image.src),
+      };
+      return image;
+    },
+  });
+  assert.deepEqual(loaded.sort(), [
+    'blob:http://127.0.0.1/abc',
+    'data:image/png;base64,AAAA',
+  ]);
+  const plan = planImportedSource(source, { sizes });
+  assert.equal(plan.images.get('data:image/png;base64,AAAA').sizePx, 20);
+  assert.equal(plan.images.get('https://example.invalid/icon.png').sizePx, 32);
+});
diff --git a/src/ui/flyToDataSource.js b/src/ui/flyToDataSource.js
index bf4b9336a..1a18c4c0d 100644
--- a/src/ui/flyToDataSource.js
+++ b/src/ui/flyToDataSource.js
@@ -3,6 +3,7 @@ import * as Cesium from 'cesium';
 import { guardCameraAboveGround } from '../cameraGroundGuard.js';
 import { rangeForBoundingSphere } from '../data/cameraFraming.js';
 import { cancelCameraArrival } from '../data/cameraArrival.js';
+import { isGlobeEngine } from '../globe/contract.js';
 
 /** All visible positions, path vertices, polygon rings, walls and overlay bounds. */
 export function dataSourcePoints(dataSource, time = Cesium.JulianDate.now()) {
@@ -69,7 +70,11 @@ export function dataSourcePoints(dataSource, time = Cesium.JulianDate.now()) {
   return points;
 }
 
-/** Fly synchronously to the footprint; later navigation always owns its camera. */
+/**
+ * Fly synchronously to the footprint; later navigation always owns its
+ * camera. `viewer` is a Cesium viewer or a globe engine (Navara), which flies
+ * the same sphere through the contract's flyToSphere.
+ */
 export function flyToDataSource(
   viewer,
   dataSource,
@@ -87,7 +92,12 @@ export function flyToDataSource(
     Cesium.Cartographic.fromDegrees(points[0][0], points[0][1]);
   const lat = Cesium.Math.toDegrees(center.latitude),
     lon = Cesium.Math.toDegrees(center.longitude);
-  const terrain = viewer.scene?.globe?.getHeight?.(center);
+  const engine = isGlobeEngine(viewer) ? viewer : null;
+  const terrain = engine
+    ? engine.surface.terrainHeightSupported
+      ? engine.surface.terrainHeight(center)
+      : undefined
+    : viewer.scene?.globe?.getHeight?.(center);
   const cached = ground?.cachedGroundFloor?.(lat, lon);
   const height =
     Number.isFinite(terrain) && terrain > 0
@@ -109,6 +119,30 @@ export function flyToDataSource(
       sphere.radius,
       Cesium.Cartesian3.distance(sphere.center, position),
     );
+  if (engine) {
+    const pose = engine.camera.pose();
+    const aspect = pose.aspectRatio ?? 1;
+    // Cesium's frustum fov: the wider side's angle.
+    const fov =
+      aspect > 1 ? 2 * Math.atan(Math.tan(pose.fovy / 2) * aspect) : pose.fovy;
+    engine.camera.flyToSphere(
+      { center: sphere.center, radius: sphere.radius },
+      {
+        heading: pose.heading || 0,
+        pitch: -Math.PI / 2,
+        range: Math.max(
+          800,
+          rangeForBoundingSphere(
+            { camera: { frustum: { fov, aspectRatio: aspect } } },
+            sphere.radius,
+          ),
+        ),
+        duration,
+        complete: () => guardCameraAboveGround(engine, { lat, lon }),
+      },
+    );
+    return true;
+  }
   viewer.camera?.flyToBoundingSphere?.(sphere, {
     offset: new Cesium.HeadingPitchRange(
       viewer.camera.heading || 0,
diff --git a/src/ui/flyToDataSource.test.mjs b/src/ui/flyToDataSource.test.mjs
index 62f6073a6..6129b9fb9 100644
--- a/src/ui/flyToDataSource.test.mjs
+++ b/src/ui/flyToDataSource.test.mjs
@@ -161,3 +161,20 @@ test('non-finite positions and hidden features never enter the camera footprint'
   assert.equal(points.length, 1);
   assert.ok(Math.abs(points[0][0] - 20) < 1e-6);
 });
+
+test('on a globe engine the footprint is flown to through flyToSphere, straight down at the surface', async () => {
+  const { createFakeEngine } = await import('../globe/testing/fakeEngine.js');
+  const engine = createFakeEngine({ kind: 'navara' });
+  engine.fake.script('terrainHeight', 120);
+  assert.equal(flyToDataSource(engine, source(), { duration: 0.5 }), true);
+  const [call] = engine.fake.callsOf('camera.flyToSphere');
+  assert.ok(call, 'one sphere flight');
+  const [sphere, options] = call.args;
+  const center = Cesium.Cartographic.fromCartesian(sphere.center);
+  assert.ok(Math.abs(center.height - 120) < 1, 'centre on the terrain');
+  assert.ok(sphere.radius > 100);
+  assert.equal(options.pitch, -Math.PI / 2);
+  assert.equal(options.duration, 0.5);
+  assert.ok(options.range >= 800);
+  assert.equal(typeof options.complete, 'function');
+});
diff --git a/src/ui/geoFileImport.js b/src/ui/geoFileImport.js
index 81c0e9a88..bf30bdaaa 100644
--- a/src/ui/geoFileImport.js
+++ b/src/ui/geoFileImport.js
@@ -42,11 +42,14 @@ export function initGeoFileImport({ viewer, ...options }) {
  *   and returns their disconnect.
  *
  * The imported files belong to the session; their drawing belongs to the
- * attached Cesium viewer. `attachScene({ viewer })` draws them (a file kept
- * while no viewer was attached is read again from its bytes) and listens for
- * drops and camera gestures there; `detachScene()` takes them off the viewer
- * and keeps the list. Without a viewer (an engine without Cesium) the list
- * stays, and import and fly-to wait for one.
+ * attached globe. `attachScene({ viewer })` draws them on a Cesium viewer;
+ * `attachScene({ engine, draw })` on a globe engine without one (Navara),
+ * where `draw(dataSource)` resolves with that engine's drawing of a file
+ * ({ report, setShow, refresh, destroy }: src/layers/shared/render/navaraStory.js).
+ * A file kept while no globe was attached is read again from its bytes; the
+ * control listens for drops and camera gestures on the attached globe.
+ * `detachScene()` takes the files off the globe and keeps the list. Without a
+ * globe the list stays, and import and fly-to wait for one.
  * @returns {{destroy: Function, importFiles: Function, list: Function,
  *   setVisible: Function, flyTo: Function, remove: Function,
  *   diagnostics: Function, attachScene: Function, detachScene: Function}|null}
@@ -75,8 +78,8 @@ export function createGeoFileImport({
   let cameraIntent = 0;
   let hint = '';
   const lifetime = new AbortController();
-  // The attached viewer and the lifetime of that attachment.
-  let viewer = null;
+  // The attached globe ({ viewer, engine, draw, controller }): a Cesium
+  // viewer, or an engine and its drawing; null while none is attached.
   let scene = null;
 
   const listen = (target, type, listener, options) => {
@@ -88,13 +91,16 @@ export function createGeoFileImport({
     hint = text || '';
     present();
   };
-  const render = () => viewer?.scene?.requestRender?.();
+  const render = () => {
+    if (scene?.viewer) scene.viewer.scene?.requestRender?.();
+    else scene?.engine?.render.request('geo-import');
+  };
   let groundTimer,
     groundQueued = false,
     groundAgain = false;
   let groundRemovers = [];
   const scheduleGround = () => {
-    if (destroyed || !viewer || !imports.length) return;
+    if (destroyed || !scene || !imports.length) return;
     if (groundQueued) {
       groundAgain = true;
       return;
@@ -109,8 +115,10 @@ export function createGeoFileImport({
           try {
             for (const item of imports) {
               if (destroyed || scene !== attached) return;
-              if (item.visible)
+              if (item.visible) {
                 await item.refreshGround?.(attached.controller.signal);
+                item.drawing?.refresh?.();
+              }
             }
             render();
           } catch {
@@ -182,6 +190,7 @@ export function createGeoFileImport({
     if (!item) return false;
     item.visible = Boolean(visible);
     if (item.dataSource) item.dataSource.show = item.visible;
+    item.drawing?.setShow(item.visible);
     if (item.visible) scheduleGround();
     present();
     render();
@@ -189,9 +198,9 @@ export function createGeoFileImport({
   }
 
   const fly = (item) => {
-    if (!viewer || !item.dataSource) return false;
+    if (!scene || !item.dataSource) return false;
     if (!item.visible) setVisible(item.id, true);
-    flyToSource(viewer, item.dataSource, { ground });
+    flyToSource(scene.viewer ?? scene.engine, item.dataSource, { ground });
     return true;
   };
 
@@ -201,7 +210,7 @@ export function createGeoFileImport({
    */
   function flyTo(id) {
     const item = find(id);
-    if (!item || !viewer || !item.dataSource) return false;
+    if (!item || !scene || !item.dataSource) return false;
     if (typeof navigation?.runImmediateNavigation === 'function')
       return (
         navigation.runImmediateNavigation('file', () => fly(item)) !== false
@@ -223,9 +232,12 @@ export function createGeoFileImport({
       : true;
   };
 
-  /** Take one file's drawing off the viewer; the file stays in the list. */
-  function undraw(item, from = viewer) {
-    if (item.dataSource) from?.dataSources?.remove?.(item.dataSource, true);
+  /** Take one file's drawing off the globe; the file stays in the list. */
+  function undraw(item, from = scene) {
+    if (item.dataSource)
+      from?.viewer?.dataSources?.remove?.(item.dataSource, true);
+    item.drawing?.destroy();
+    item.drawing = null;
     item.revoke?.();
     item.dataSource = null;
     item.revoke = null;
@@ -243,17 +255,27 @@ export function createGeoFileImport({
     return true;
   }
 
-  /** Read a file for the attached viewer. Null once that viewer went. */
+  /** Draw a file read for the attached globe. False once that globe went. */
   async function draw(item, attached, loaded) {
     item.dataSource = loaded.dataSource;
     item.revoke = loaded.revoke;
     item.refreshGround = loaded.refreshGround;
     item.dataSource.show = item.visible;
-    await attached.viewer.dataSources.add(item.dataSource);
+    if (attached.viewer) await attached.viewer.dataSources.add(item.dataSource);
+    else {
+      try {
+        item.drawing = await attached.draw(item.dataSource);
+      } catch (error) {
+        undraw(item, attached);
+        throw error;
+      }
+    }
     if (destroyed || scene !== attached) {
-      undraw(item, attached.viewer);
+      undraw(item, attached);
       return false;
     }
+    // What this globe leaves out of the file (Navara: labels, models...).
+    item.undrawn = item.drawing?.report?.undrawn ?? 0;
     loaded.mount?.();
     return true;
   }
@@ -267,8 +289,8 @@ export function createGeoFileImport({
   function importFiles(files) {
     const list = [...(files || [])];
     if (destroyed || !list.length) return Promise.resolve([]);
-    if (!viewer) {
-      // Import draws on the Cesium globe; this engine has none.
+    if (!scene) {
+      // Import draws on the attached globe; there is none.
       const error = t('Action unavailable or cancelled');
       setHint(error);
       return Promise.resolve(
@@ -311,6 +333,7 @@ export function createGeoFileImport({
       try {
         loaded = await load(file, {
           viewer: attached.viewer,
+          engine: attached.engine,
           color,
           signal: attached.controller.signal,
         });
@@ -343,13 +366,26 @@ export function createGeoFileImport({
         removed: loaded.removed || 0,
         color,
         visible: true,
-        // The bytes, so a later viewer can read the file again.
+        // The bytes, so a later globe can read the file again.
         file,
         dataSource: null,
+        drawing: null,
+        undrawn: 0,
         revoke: null,
         refreshGround: null,
       };
-      if (!(await draw(item, attached, loaded))) break;
+      try {
+        if (!(await draw(item, attached, loaded))) break;
+      } catch (error) {
+        // A Cesium viewer's own failure stops the batch, as it always did.
+        if (attached.viewer) throw error;
+        outcomes.push({
+          name: fileName,
+          ok: false,
+          error: t('That file could not be read.'),
+        });
+        continue;
+      }
       imports.push(item);
       present();
       render();
@@ -358,6 +394,7 @@ export function createGeoFileImport({
         ok: true,
         id: item.id,
         removed: item.removed,
+        undrawn: item.undrawn,
       });
       if (
         outcomes.filter((o) => o.ok).length === 1 &&
@@ -370,7 +407,7 @@ export function createGeoFileImport({
     return outcomes;
   }
 
-  // Draw the files kept while no viewer was attached, as they were.
+  // Draw the files kept while no globe was attached, as they were.
   async function redraw(attached) {
     for (const item of [...imports]) {
       if (destroyed || scene !== attached) return;
@@ -378,6 +415,7 @@ export function createGeoFileImport({
       try {
         const loaded = await load(item.file, {
           viewer: attached.viewer,
+          engine: attached.engine,
           color: item.color,
           signal: attached.controller.signal,
         });
@@ -392,6 +430,9 @@ export function createGeoFileImport({
       }
     }
     if (!destroyed && scene === attached) {
+      // Say what this globe leaves out of the files it drew again.
+      const left = imports.filter((item) => item.undrawn);
+      if (left.length) setHint(undrawnHint(left));
       present();
       render();
     }
@@ -423,35 +464,42 @@ export function createGeoFileImport({
       target.removeEventListener(type, listener, options);
     dragDepth = 0;
     setDragging(false);
-    for (const item of imports) undraw(item, previous.viewer);
-    viewer = null;
+    for (const item of imports) undraw(item, previous);
   }
 
   function attachScene({
-    viewer: next = null,
+    viewer = null,
+    engine = null,
+    draw: drawOnEngine = null,
     navigation: nextNavigation = navigation,
     subscribeMapSource: nextMapSource = subscribeMapSource,
   } = {}) {
     if (destroyed) return;
     detachScene();
-    if (!next) return;
-    viewer = next;
+    if (!viewer && !(engine && drawOnEngine)) return;
     // The shell and the map sources of this attachment.
     navigation = nextNavigation;
     const offMapSource = nextMapSource?.(scheduleGround);
     if (typeof offMapSource === 'function') groundRemovers.push(offMapSource);
-    const attached = (scene = { viewer, controller: new AbortController() });
-    ownEvent(viewer.camera?.moveEnd, scheduleGround);
-    ownEvent(viewer.scene?.globe?.tileLoadProgressEvent, (pending) => {
+    const attached = (scene = {
+      viewer,
+      engine: viewer ? null : engine,
+      draw: viewer ? null : drawOnEngine,
+      controller: new AbortController(),
+    });
+    ownEvent(
+      viewer ? viewer.camera?.moveEnd : engine.camera.moveEnd,
+      scheduleGround,
+    );
+    ownEvent(viewer?.scene?.globe?.tileLoadProgressEvent, (pending) => {
       if (!pending) scheduleGround();
     });
-    const container = viewer.container;
-    listen(viewer.scene?.canvas || container, 'pointerdown', gesture, {
-      passive: true,
-    });
-    listen(viewer.scene?.canvas || container, 'wheel', gesture, {
-      passive: true,
-    });
+    const container = viewer ? viewer.container : engine.host.container;
+    const canvas = viewer
+      ? viewer.scene?.canvas || container
+      : engine.host.canvas;
+    listen(canvas, 'pointerdown', gesture, { passive: true });
+    listen(canvas, 'wheel', gesture, { passive: true });
     listen(container, 'dragenter', (event) => {
       if (!hasFiles(event)) return;
       event.preventDefault();
@@ -487,14 +535,17 @@ export function createGeoFileImport({
   const handle = {
     importFiles,
     list: () =>
-      imports.map(({ id, name, format, entityCount, removed, visible }) => ({
-        id,
-        name,
-        format,
-        entityCount,
-        removed,
-        visible,
-      })),
+      imports.map(
+        ({ id, name, format, entityCount, removed, visible, undrawn }) => ({
+          id,
+          name,
+          format,
+          entityCount,
+          removed,
+          visible,
+          undrawn,
+        }),
+      ),
     setVisible,
     flyTo,
     remove,
@@ -505,12 +556,12 @@ export function createGeoFileImport({
       drawn: imports.filter((item) => item.dataSource).length,
       entities: imports.reduce((n, item) => n + item.entityCount, 0),
       listeners: listeners.length,
-      attached: Boolean(viewer),
+      attached: Boolean(scene),
       destroyed,
     }),
     destroy() {
       if (destroyed) return;
-      const last = viewer;
+      const last = scene;
       detachScene();
       destroyed = true;
       disconnect();
@@ -558,5 +609,18 @@ export function summarize(outcomes) {
     0,
   );
   if (added && stripped) parts.push(t('Some KML content was left out.'));
+  const left = outcomes.filter((o) => o.ok && o.undrawn);
+  if (left.length) parts.push(undrawnHint(left));
   return parts.join(' ');
 }
+
+/**
+ * What the attached globe leaves out of the given files (each `{ name,
+ * undrawn }`): the first file's name and the total count.
+ */
+export function undrawnHint(items) {
+  return t('Map objects this engine leaves out of {name}: {count}.', {
+    name: items[0].name,
+    count: formatNumber(items.reduce((n, item) => n + item.undrawn, 0)),
+  });
+}
diff --git a/src/ui/geoFileImport.test.mjs b/src/ui/geoFileImport.test.mjs
index 24efac19a..0300e62e5 100644
--- a/src/ui/geoFileImport.test.mjs
+++ b/src/ui/geoFileImport.test.mjs
@@ -690,3 +690,107 @@ test('an engine switch keeps the files and draws them again on the next viewer',
   assert.equal(t.tool.diagnostics().drawn, 2);
   t.tool.destroy();
 });
+
+test('on Navara the files draw through the engine drawing, report what it leaves out and switch back to Cesium', async () => {
+  const t = setup();
+  await t.tool.importFiles([file('a.geojson')]);
+  t.tool.detachScene();
+  const canvas = new FakeElement('canvas');
+  const container = new FakeElement('div', 'cesiumContainer');
+  const moveEnd = new Set();
+  const requests = [];
+  const engine = {
+    host: { canvas, container },
+    camera: {
+      moveEnd: {
+        addEventListener: (fn) => (moveEnd.add(fn), () => moveEnd.delete(fn)),
+      },
+    },
+    render: { request: (reason) => requests.push(reason) },
+  };
+  const drawings = [];
+  const draw = async (dataSource) => {
+    const drawing = {
+      dataSource,
+      shown: [],
+      destroyed: false,
+      report: { drawn: 2, undrawn: 3, kinds: { label: 3 } },
+      setShow: (show) => drawing.shown.push(show),
+      refresh() {},
+      destroy() {
+        drawing.destroyed = true;
+      },
+    };
+    drawings.push(drawing);
+    return drawing;
+  };
+  t.loads.length = 0;
+  t.tool.attachScene({ engine, draw });
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  // The kept file is read again for the engine and drawn by it.
+  assert.deepEqual(
+    t.loads.map(({ opts }) => [opts.viewer, opts.engine === engine]),
+    [[null, true]],
+  );
+  assert.equal(drawings.length, 1);
+  assert.match(t.shown().hint, /leaves out of a\.geojson: 3/);
+  assert.equal(t.tool.list()[0].undrawn, 3);
+  assert.ok(canvas.listeners.length > 0, 'gestures on the engine canvas');
+  assert.ok(container.listeners.length > 0, 'drops on its container');
+  assert.equal(moveEnd.size, 1);
+  // A new file: drawn, counted, reported in the batch hint.
+  const outcomes = await t.tool.importFiles([file('b.geojson')]);
+  assert.deepEqual(
+    outcomes.map(({ ok, undrawn }) => [ok, undrawn]),
+    [[true, 3]],
+  );
+  assert.match(t.shown().hint, /Added 1 file\. .*leaves out of b\.geojson: 3/);
+  const [a] = rows(t);
+  press(t, a, 'toggle');
+  assert.deepEqual(drawings[0].shown, [false]);
+  // Fly-to goes to the engine.
+  assert.equal(t.tool.flyTo(a.id), true);
+  assert.equal(t.flights.length > 0, true);
+  // A switch to Cesium takes the drawing off the engine.
+  t.tool.detachScene();
+  assert.ok(drawings.every((drawing) => drawing.destroyed));
+  assert.equal(canvas.listeners.length, 0);
+  assert.equal(moveEnd.size, 0);
+  t.tool.attachScene({ viewer: t.viewer });
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(t.tool.diagnostics().drawn, 2);
+  t.tool.destroy();
+});
+
+test('an engine drawing that fails reports the file instead of stopping the batch', async () => {
+  const t = setup();
+  t.tool.detachScene();
+  const engine = {
+    host: { canvas: new FakeElement('canvas'), container: new FakeElement() },
+    camera: { moveEnd: { addEventListener: () => () => {} } },
+    render: { request() {} },
+  };
+  let calls = 0;
+  t.tool.attachScene({
+    engine,
+    draw: async () => {
+      if (calls++ === 0) throw new Error('no GPU');
+      return { report: { undrawn: 0 }, setShow() {}, destroy() {} };
+    },
+  });
+  const outcomes = await t.tool.importFiles([
+    file('bad.geojson'),
+    file('good.geojson'),
+  ]);
+  assert.deepEqual(
+    outcomes.map(({ name, ok }) => [name, ok]),
+    [
+      ['bad.geojson', false],
+      ['good.geojson', true],
+    ],
+  );
+  assert.deepEqual(t.revoked, ['bad.geojson'], 'the failed read is released');
+  t.tool.destroy();
+});