diff --git a/projects/cesium-test-app/src/app/app.component.ts b/projects/cesium-test-app/src/app/app.component.ts
index 6a6fed537e..446309ead4 100644
--- a/projects/cesium-test-app/src/app/app.component.ts
+++ b/projects/cesium-test-app/src/app/app.component.ts
@@ -7,7 +7,7 @@ import {
   HeadingPitchRoll,
   Transforms,
 } from 'cesium';
-import {GeoJSON} from 'ol/format';
+import {GeoJSON, KML} from 'ol/format';
 import {Image as ImageLayer, Tile, Vector as VectorLayer} from 'ol/layer';
 import {OSM, Vector as VectorSource, XYZ} from 'ol/source';
 import {View} from 'ol';
@@ -44,6 +44,15 @@ export class AppComponent implements OnInit {
         format: new GeoJSON(),
       }) as VectorSource, //FIXME: Type-cast shall be automatically inferred after OL >8.2
     });
+    const polygon25dKml = new VectorLayer({
+      properties: {
+        title: '2.5D polygon surface as KML',
+      },
+      source: new VectorSource({
+        url: '../assets/polygon2.5d.kml',
+        format: new KML(),
+      }) as VectorSource, //FIXME: Type-cast shall be automatically inferred after OL >8.2
+    });
     const geojsonObject2d = {
       'type': 'FeatureCollection',
       'crs': {
@@ -203,8 +212,8 @@ export class AppComponent implements OnInit {
       ],
       popUpDisplay: 'hover',
       default_view: new View({
-        center: transform([17.474129, 52.574], 'EPSG:4326', 'EPSG:3857'), //Latitude longitude    to Spherical Mercator
-        zoom: 4,
+        center: transform([13.3, 49.7], 'EPSG:4326', 'EPSG:3857'), //Latitude longitude    to Spherical Mercator
+        zoom: 12,
       }),
       default_layers: [
         new Tile({
@@ -263,6 +272,7 @@ export class AppComponent implements OnInit {
           }) as VectorSource, //FIXME: Type-cast shall be automatically inferred after OL >8.2
         }),
         polygon25d,
+        polygon25dKml,
         opticalMap,
       ],
     });
diff --git a/projects/cesium-test-app/src/assets/polygon2.5d.kml b/projects/cesium-test-app/src/assets/polygon2.5d.kml
new file mode 100644
index 0000000000..0cdea7ff7e
--- /dev/null
+++ b/projects/cesium-test-app/src/assets/polygon2.5d.kml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<kml xmlns="http://www.opengis.net/kml/2.2">
+<Document id="root_doc">
+<Schema name="polygon2.5d" id="polygon2.5d">
+  <SimpleField name="height" type="int"></SimpleField>
+</Schema>
+<Folder><name>polygon2.5d</name>
+  <Placemark>
+  <name>Polygon with height higher than its Z-coords</name>
+  <Style><LineStyle><color>ff0000ff</color></LineStyle><PolyStyle><fill>0</fill></PolyStyle></Style>
+  <ExtendedData><SchemaData schemaUrl="#polygon2.5d">
+    <SimpleData name="height">800</SimpleData>
+  </SchemaData></ExtendedData>
+    <Polygon><outerBoundaryIs><LinearRing><coordinates>13.365,49.74,350 13.363,49.735,400 13.37,49.735,450 13.373,49.74,500 13.372,49.74,650 13.368,49.738,700 13.365,49.74,350</coordinates></LinearRing></outerBoundaryIs></Polygon>
+  </Placemark>
+</Folder>
+</Document></kml>