diff --git a/src/main/java/org/opentripplanner/apis/transmodel/model/stop/QuayType.java b/src/main/java/org/opentripplanner/apis/transmodel/model/stop/QuayType.java
index b80efab77b5..a15bf2f838e 100644
--- a/src/main/java/org/opentripplanner/apis/transmodel/model/stop/QuayType.java
+++ b/src/main/java/org/opentripplanner/apis/transmodel/model/stop/QuayType.java
@@ -380,20 +380,21 @@ public static GraphQLObjectType create(
           .name("flexibleArea")
           .description("Geometry for flexible area.")
           .type(GeoJSONCoordinatesScalar.getGraphQGeoJSONCoordinatesScalar())
-          .dataFetcher(environment ->
-            (
-              environment.getSource() instanceof AreaStop areaStop
-                ? areaStop.getGeometry().getCoordinates()
-                : null
-            )
-          )
+          .dataFetcher(environment -> {
+            if (environment.getSource() instanceof AreaStop areaStop) {
+              return areaStop.getGeometry().getCoordinates();
+            } else if (environment.getSource() instanceof GroupStop groupStop) {
+              return groupStop.getEncompassingAreaGeometry().getCoordinates();
+            }
+            return null;
+          })
           .build()
       )
       .field(
         GraphQLFieldDefinition
           .newFieldDefinition()
           .name("flexibleGroup")
-          .description("the Quays part of an flexible group.")
+          .description("the Quays part of a flexible group.")
           .type(GraphQLList.list(REF))
           .dataFetcher(environment ->
             (
diff --git a/src/main/java/org/opentripplanner/netex/mapping/FlexStopsMapper.java b/src/main/java/org/opentripplanner/netex/mapping/FlexStopsMapper.java
index 1e6eb1979bb..5bc8d63679a 100644
--- a/src/main/java/org/opentripplanner/netex/mapping/FlexStopsMapper.java
+++ b/src/main/java/org/opentripplanner/netex/mapping/FlexStopsMapper.java
@@ -62,6 +62,7 @@ StopLocation map(FlexibleStopPlace flexibleStopPlace) {
     List<StopLocation> stops = new ArrayList<>();
     TransitMode flexibleStopTransitMode = mapTransitMode(flexibleStopPlace);
     var areas = flexibleStopPlace.getAreas().getFlexibleAreaOrFlexibleAreaRefOrHailAndRideArea();
+    ArrayList<Geometry> areaGeometries = new ArrayList<>();
     for (var area : areas) {
       if (!(area instanceof FlexibleArea flexibleArea)) {
         issueStore.add(
@@ -76,6 +77,7 @@ StopLocation map(FlexibleStopPlace flexibleStopPlace) {
       }
 
       Geometry flexibleAreaGeometry = mapGeometry(flexibleArea);
+      areaGeometries.add(flexibleAreaGeometry);
 
       if (shouldAddStopsFromArea(flexibleArea, flexibleStopPlace)) {
         stops.addAll(
@@ -100,7 +102,8 @@ StopLocation map(FlexibleStopPlace flexibleStopPlace) {
       // get the ids for the area and stop place correct
       var builder = stopModelBuilder
         .groupStop(idFactory.createId(flexibleStopPlace.getId()))
-        .withName(new NonLocalizedString(flexibleStopPlace.getName().getValue()));
+        .withName(new NonLocalizedString(flexibleStopPlace.getName().getValue()))
+        .withEncompassingAreaGeometries(areaGeometries);
       stops.forEach(builder::addLocation);
       return builder.build();
     }
diff --git a/src/main/java/org/opentripplanner/transit/model/site/GroupStop.java b/src/main/java/org/opentripplanner/transit/model/site/GroupStop.java
index ac3cca3dd13..f2baf84b5c3 100644
--- a/src/main/java/org/opentripplanner/transit/model/site/GroupStop.java
+++ b/src/main/java/org/opentripplanner/transit/model/site/GroupStop.java
@@ -24,6 +24,8 @@ public class GroupStop
   private final I18NString name;
   private final GeometryCollection geometry;
 
+  private final GeometryCollection encompassingAreaGeometry;
+
   private final WgsCoordinate centroid;
 
   GroupStop(GroupStopBuilder builder) {
@@ -33,6 +35,7 @@ public class GroupStop
     this.geometry = builder.geometry();
     this.centroid = Objects.requireNonNull(builder.centroid());
     this.stopLocations = builder.stopLocations();
+    this.encompassingAreaGeometry = builder.encompassingAreaGeometry();
   }
 
   public static GroupStopBuilder of(FeedScopedId id, IntSupplier indexCounter) {
@@ -79,6 +82,10 @@ public Geometry getGeometry() {
     return geometry;
   }
 
+  public Geometry getEncompassingAreaGeometry() {
+    return encompassingAreaGeometry;
+  }
+
   @Override
   public boolean isPartOfStation() {
     return false;
diff --git a/src/main/java/org/opentripplanner/transit/model/site/GroupStopBuilder.java b/src/main/java/org/opentripplanner/transit/model/site/GroupStopBuilder.java
index 5e0dc596eba..b474658f5ec 100644
--- a/src/main/java/org/opentripplanner/transit/model/site/GroupStopBuilder.java
+++ b/src/main/java/org/opentripplanner/transit/model/site/GroupStopBuilder.java
@@ -1,5 +1,6 @@
 package org.opentripplanner.transit.model.site;
 
+import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Set;
 import java.util.function.IntSupplier;
@@ -26,6 +27,11 @@ public class GroupStopBuilder extends AbstractEntityBuilder<GroupStop, GroupStop
     GeometryUtils.getGeometryFactory()
   );
 
+  private GeometryCollection encompassingAreaGeometry = new GeometryCollection(
+    null,
+    GeometryUtils.getGeometryFactory()
+  );
+
   private WgsCoordinate centroid;
 
   GroupStopBuilder(FeedScopedId id, IntSupplier indexCounter) {
@@ -53,6 +59,15 @@ public GroupStopBuilder withName(I18NString name) {
     return this;
   }
 
+  public GroupStopBuilder withEncompassingAreaGeometries(ArrayList<Geometry> geometries) {
+    this.encompassingAreaGeometry =
+      new GeometryCollection(
+        geometries.toArray(new Geometry[0]),
+        GeometryUtils.getGeometryFactory()
+      );
+    return this;
+  }
+
   public I18NString name() {
     return name;
   }
@@ -90,6 +105,10 @@ public GeometryCollection geometry() {
     return geometry;
   }
 
+  public GeometryCollection encompassingAreaGeometry() {
+    return encompassingAreaGeometry;
+  }
+
   public WgsCoordinate centroid() {
     return centroid;
   }
diff --git a/src/main/resources/org/opentripplanner/apis/transmodel/schema.graphql b/src/main/resources/org/opentripplanner/apis/transmodel/schema.graphql
index 9b49283c180..25cf95ca2f9 100644
--- a/src/main/resources/org/opentripplanner/apis/transmodel/schema.graphql
+++ b/src/main/resources/org/opentripplanner/apis/transmodel/schema.graphql
@@ -579,7 +579,7 @@ type Quay implements PlaceInterface {
   ): [EstimatedCall!]! @timingData
   "Geometry for flexible area."
   flexibleArea: Coordinates
-  "the Quays part of an flexible group."
+  "the Quays part of a flexible group."
   flexibleGroup: [Quay]
   id: ID!
   "List of journey patterns servicing this quay"