diff --git a/css/style.css b/css/style.css
index 213d6b3f..99cc7b36 100644
--- a/css/style.css
+++ b/css/style.css
@@ -749,3 +749,15 @@ table.dataTable.display tbody tr:hover.selected {
     so we ignore pointer events in this situation to avoid that*/
     pointer-events: none;
 }
+
+/*
+ * Heightgraph customizations;
+ * since the legend and the gradient types are in the way, hide them;
+ * since there's only the gradient layer, hide the layer selector.
+ */
+.legend-hover {
+    display: none;
+}
+#selectionText {
+    display: none;
+}
diff --git a/js/index.js b/js/index.js
index 18aa65f7..f89dd3d8 100644
--- a/js/index.js
+++ b/js/index.js
@@ -214,7 +214,8 @@
         } else {
             stats = new BR.TrackStats();
         }
-        elevation = new BR.Elevation();
+
+        elevation = new BR.Heightgraph();
 
         profile = new BR.Profile();
         profile.on('update', function (evt) {
@@ -460,12 +461,6 @@
             },
             urlHash
         );
-
-        // listener and initCollapse here and not in onAdd, as addBelow calls addTo (-> onAdd) on resize
-        $(window).resize(function () {
-            elevation.addBelow(map);
-        });
-        elevation.initCollapse(map);
     }
 
     i18next.on('languageChanged', function (detectedLanguage) {
diff --git a/js/plugin/Elevation.js b/js/plugin/Elevation.js
deleted file mode 100644
index b8dadb66..00000000
--- a/js/plugin/Elevation.js
+++ /dev/null
@@ -1,113 +0,0 @@
-BR.Elevation = L.Control.Elevation.extend({
-    options: {
-        width: $('#map').outerWidth(),
-        margins: {
-            top: 20,
-            right: 30,
-            bottom: 30,
-            left: 60,
-        },
-        theme: 'steelblue-theme',
-        shortcut: {
-            toggle: 69, // char code for 'e'
-        },
-    },
-
-    onAdd: function (map) {
-        var container = L.Control.Elevation.prototype.onAdd.call(this, map);
-
-        // revert registering touch events when touch screen detection is available and negative
-        // see https://github.com/MrMufflon/Leaflet.Elevation/issues/67
-        if (L.Browser.touch && BR.Browser.touchScreenDetectable && !BR.Browser.touchScreen) {
-            this._background.on('touchmove.drag', null).on('touchstart.drag', null).on('touchstart.focus', null);
-            L.DomEvent.off(this._container, 'touchend', this._dragEndHandler, this);
-
-            this._background
-                .on('mousemove.focus', this._mousemoveHandler.bind(this))
-                .on('mouseout.focus', this._mouseoutHandler.bind(this))
-                .on('mousedown.drag', this._dragStartHandler.bind(this))
-                .on('mousemove.drag', this._dragHandler.bind(this));
-            L.DomEvent.on(this._container, 'mouseup', this._dragEndHandler, this);
-        }
-
-        L.DomEvent.addListener(document, 'keydown', this._keydownListener, this);
-
-        return container;
-    },
-
-    addBelow: function (map) {
-        // waiting for https://github.com/MrMufflon/Leaflet.Elevation/pull/66
-        // this.width($('#map').outerWidth());
-        this.options.width = $('#content').outerWidth();
-
-        if (this.getContainer() != null) {
-            this.remove(map);
-        }
-
-        function setParent(el, newParent) {
-            newParent.appendChild(el);
-        }
-        this.addTo(map);
-        // move elevation graph outside of the map
-        setParent(this.getContainer(), document.getElementById('elevation-chart'));
-    },
-
-    initCollapse: function (map) {
-        var self = this;
-        var onHide = function () {
-            $('#elevation-btn').removeClass('active');
-            // we must fetch tiles that are located behind elevation-chart
-            map._onResize();
-
-            if (this.id && BR.Util.localStorageAvailable() && !self.shouldRestoreChart) {
-                localStorage.removeItem(this.id);
-            }
-        };
-        var onShow = function () {
-            $('#elevation-btn').addClass('active');
-
-            if (this.id && BR.Util.localStorageAvailable()) {
-                localStorage[this.id] = 'true';
-            }
-        };
-        // on page load, we want to restore collapse state from previous usage
-        $('#elevation-chart')
-            .on('hidden.bs.collapse', onHide)
-            .on('shown.bs.collapse', onShow)
-            .each(function () {
-                if (this.id && BR.Util.localStorageAvailable() && localStorage[this.id] === 'true') {
-                    self.shouldRestoreChart = true;
-                }
-            });
-    },
-
-    update: function (track, layer) {
-        this.clear();
-
-        // bring height indicator to front, because of track casing in BR.Routing
-        if (this._mouseHeightFocus) {
-            var g = this._mouseHeightFocus[0][0].parentNode;
-            g.parentNode.appendChild(g);
-        }
-
-        if (track && track.getLatLngs().length > 0) {
-            if (this.shouldRestoreChart === true) $('#elevation-chart').collapse('show');
-            this.shouldRestoreChart = undefined;
-
-            this.addData(track.toGeoJSON(), layer);
-
-            layer.on('mouseout', this._hidePositionMarker.bind(this));
-        } else {
-            if ($('#elevation-chart').hasClass('show')) {
-                this.shouldRestoreChart = true;
-            }
-            $('#elevation-chart').collapse('hide');
-        }
-    },
-
-    _keydownListener: function (e) {
-        if (BR.Util.keyboardShortcutsAllowed(e) && e.keyCode === this.options.shortcut.toggle) {
-            $('#elevation-btn').click();
-        }
-    },
-});
diff --git a/js/plugin/Heightgraph.js b/js/plugin/Heightgraph.js
new file mode 100644
index 00000000..f0ebb3e4
--- /dev/null
+++ b/js/plugin/Heightgraph.js
@@ -0,0 +1,194 @@
+BR.Heightgraph = function (map, layersControl, routing, pois) {
+    Heightgraph = L.Control.Heightgraph.extend({
+        options: {
+            width: $('#map').outerWidth(),
+            margins: {
+                top: 15,
+                right: 30,
+                bottom: 30,
+                left: 70,
+            },
+            expandControls: false,
+            mappings: {
+                gradient: {
+                    '-5': {
+                        text: '- 16%+',
+                        color: '#028306',
+                    },
+                    '-4': {
+                        text: '- 10-15%',
+                        color: '#2AA12E',
+                    },
+                    '-3': {
+                        text: '- 7-9%',
+                        color: '#53BF56',
+                    },
+                    '-2': {
+                        text: '- 4-6%',
+                        color: '#7BDD7E',
+                    },
+                    '-1': {
+                        text: '- 1-3%',
+                        color: '#A4FBA6',
+                    },
+                    0: {
+                        text: '0%',
+                        color: '#ffcc99',
+                    },
+                    1: {
+                        text: '1-3%',
+                        color: '#F29898',
+                    },
+                    2: {
+                        text: '4-6%',
+                        color: '#E07575',
+                    },
+                    3: {
+                        text: '7-9%',
+                        color: '#CF5352',
+                    },
+                    4: {
+                        text: '10-15%',
+                        color: '#BE312F',
+                    },
+                    5: {
+                        text: '16%+',
+                        color: '#AD0F0C',
+                    },
+                },
+            },
+            // extra options
+            shortcut: {
+                toggle: 69, // char code for 'e'
+            },
+        },
+
+        addBelow: function (map) {
+            // waiting for https://github.com/MrMufflon/Leaflet.Elevation/pull/66
+            // this.width($('#map').outerWidth());
+            this.options.width = $('#content').outerWidth();
+
+            if (this.getContainer() != null) {
+                this.remove(map);
+            }
+
+            function setParent(el, newParent) {
+                newParent.appendChild(el);
+            }
+            this.addTo(map);
+
+            // move elevation graph outside of the map
+            setParent(this.getContainer(), document.getElementById('elevation-chart'));
+
+            // bind the mouse move and mouse out handlers, I'll reuse them later on
+            this._mouseMoveHandlerBound = this.mapMousemoveHandler.bind(this);
+            this._mouseoutHandlerBound = this._mouseoutHandler.bind(this);
+
+            L.DomEvent.addListener(document, 'keydown', this._keydownListener, this);
+            this.initCollapse(map);
+
+            var self = this;
+            var container = $('#elevation-chart');
+            $(window).resize(function () {
+                // avoid useless computations if the chart is not visible
+                if (container.is(':visible')) {
+                    self.resize({
+                        width: container.width(),
+                        height: container.height(),
+                    });
+                }
+            });
+            // Trigger the chart resize after the toggle animation is complete,
+            // in case the window was resized while the chart was not visible.
+            // The resize must be called after the animation (i.e. 'shown.bs.collapse')
+            // and cannot be called before the animation (i.e. 'show.bs.collapse'),
+            // for the container has the old width pre animation and new width post animation.
+            container.on('shown.bs.collapse', function () {
+                self.resize({
+                    width: container.width(),
+                    height: container.height(),
+                });
+            });
+
+            // and render the chart
+            this.update();
+        },
+
+        initCollapse: function (map) {
+            var self = this;
+            var onHide = function () {
+                $('#elevation-btn').removeClass('active');
+                // we must fetch tiles that are located behind elevation-chart
+                map._onResize();
+
+                if (this.id && BR.Util.localStorageAvailable() && !self.shouldRestoreChart) {
+                    localStorage.removeItem(this.id);
+                }
+            };
+            var onShow = function () {
+                $('#elevation-btn').addClass('active');
+
+                if (this.id && BR.Util.localStorageAvailable()) {
+                    localStorage[this.id] = 'true';
+                }
+            };
+            // on page load, we want to restore collapse state from previous usage
+            $('#elevation-chart')
+                .on('hidden.bs.collapse', onHide)
+                .on('shown.bs.collapse', onShow)
+                .each(function () {
+                    if (this.id && BR.Util.localStorageAvailable() && localStorage[this.id] === 'true') {
+                        self.shouldRestoreChart = true;
+                    }
+                });
+        },
+
+        _keydownListener: function (e) {
+            if (BR.Util.keyboardShortcutsAllowed(e) && e.keyCode === this.options.shortcut.toggle) {
+                $('#elevation-btn').click();
+            }
+        },
+
+        update: function (track, layer) {
+            // bring height indicator to front, because of track casing in BR.Routing
+            if (this._mouseHeightFocus) {
+                var g = this._mouseHeightFocus._groups[0][0].parentNode;
+                g.parentNode.appendChild(g);
+            }
+
+            if (track && track.getLatLngs().length > 0) {
+                var geojsonFeatures = geoDataExchange.buildGeojsonFeatures(track.getLatLngs());
+                this.addData(geojsonFeatures);
+
+                // re-add handlers
+                if (layer) {
+                    layer.on('mousemove', this._mouseMoveHandlerBound);
+                    layer.on('mouseout', this._mouseoutHandlerBound);
+                }
+
+                if (this.shouldRestoreChart === true) $('#elevation-chart').collapse('show');
+                this.shouldRestoreChart = undefined;
+            } else {
+                this._removeMarkedSegmentsOnMap();
+                this._resetDrag();
+
+                // clear chart by passing an empty dataset
+                this.addData([]);
+
+                // and remove handlers
+                if (layer) {
+                    layer.off('mousemove', this._mouseMoveHandlerBound);
+                    layer.off('mouseout', this._mouseoutHandlerBound);
+                }
+
+                if ($('#elevation-chart').hasClass('show')) {
+                    this.shouldRestoreChart = true;
+                }
+                $('#elevation-chart').collapse('hide');
+            }
+        },
+    });
+
+    var heightgraphControl = new Heightgraph();
+    return heightgraphControl;
+};
diff --git a/package.json b/package.json
index f982f066..d372fe5d 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,8 @@
         "lint": "eslint .",
         "prettier": "prettier --write '**/*'",
         "serve": "gulp serve watch",
-        "standalone": "mvn clean install -f ../brouter -pl '!brouter-routing-app' -Dmaven.javadoc.skip=true && ../brouter/misc/scripts/generate_profile_variants.sh && gulp release:zip_standalone"
+        "standalone": "mvn clean install -f ../brouter -pl '!brouter-routing-app' -Dmaven.javadoc.skip=true && ../brouter/misc/scripts/generate_profile_variants.sh && gulp release:zip_standalone",
+        "postinstall": "patch-package"
     },
     "husky": {
         "hooks": {
@@ -46,9 +47,9 @@
         "bootstrap-select": "1.13.6",
         "bootstrap-slider": "^9.8.1",
         "codemirror": "^5.35.0",
-        "d3": "~3.5.5",
         "datatables": "~1.10.18",
         "font-awesome": "^4.7.0",
+        "geo-data-exchange": "alexcojocaru/geo-data-exchange#v1.1.0",
         "i18next": "^19.8.4",
         "i18next-browser-languagedetector": "^6.0.1",
         "i18next-xhr-backend": "^3.2.2",
@@ -59,7 +60,6 @@
         "leaflet-control-geocoder": "^1.13.0",
         "leaflet-easybutton": "*",
         "leaflet-editable": "^1.1.0",
-        "leaflet-elevation": "nrenner/Leaflet.Elevation#dev",
         "leaflet-filelayer": "^1.2.0",
         "leaflet-geometryutil": "^0.9.1",
         "leaflet-hotline": "^0.4.0",
@@ -68,6 +68,7 @@
         "leaflet-routing": "nrenner/leaflet-routing#e94e153",
         "leaflet-sidebar-v2": "nrenner/leaflet-sidebar-v2#dev",
         "leaflet-triangle-marker": "^1.0.2",
+        "leaflet.heightgraph": "1.3.3",
         "leaflet.locatecontrol": "^0.60.0",
         "leaflet.snogylop": "^0.4.0",
         "leaflet.stravasegments": "2.3.2",
@@ -108,6 +109,8 @@
         "merge-stream": "^2.0.0",
         "node-fetch": "^2.6.1",
         "npmfiles": "^0.1.3",
+        "patch-package": "~6.2.2",
+        "postinstall-postinstall": "~2.1.0",
         "prettier": "^2.2.1",
         "pretty-quick": "^3.1.0"
     },
@@ -172,13 +175,12 @@
                 "dist/css/bootstrap.css"
             ]
         },
-        "leaflet-elevation": {
+        "leaflet.heightgraph": {
             "main": [
-                "src/L.Control.Elevation.js",
-                "dist/leaflet.elevation-0.0.4.css",
-                "dist/images/*.png"
-            ],
-            "dependencies": null
+                "dist/L.Control.Heightgraph.js",
+                "src/L.Control.Heightgraph.css",
+                "dist/img/*.svg"
+            ]
         },
         "leaflet-control-geocoder": {
             "main": [
diff --git a/patches/leaflet.heightgraph+1.3.3.patch b/patches/leaflet.heightgraph+1.3.3.patch
new file mode 100644
index 00000000..b4ec4adb
--- /dev/null
+++ b/patches/leaflet.heightgraph+1.3.3.patch
@@ -0,0 +1,14 @@
+diff --git a/node_modules/leaflet.heightgraph/dist/L.Control.Heightgraph.js b/node_modules/leaflet.heightgraph/dist/L.Control.Heightgraph.js
+index 122c9ac..1048691 100644
+--- a/node_modules/leaflet.heightgraph/dist/L.Control.Heightgraph.js
++++ b/node_modules/leaflet.heightgraph/dist/L.Control.Heightgraph.js
+@@ -1,3 +1,4 @@
++(function() {
+ 'use strict';
+ 
+ function _typeof(obj) {
+@@ -5792,3 +5793,4 @@ var schemeSet3 = colors("8dd3c7ffffb3bebadafb807280b1d3fdb462b3de69fccde5d9d9d9b
+ 
+   return L.Control.Heightgraph;
+ }, window);
++}());
diff --git a/yarn.lock b/yarn.lock
index 4feb6802..118aa795 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1268,6 +1268,11 @@
   resolved "https://registry.yarnpkg.com/@types/parse-json/-/parse-json-4.0.0.tgz#2f8bb441434d163b35fb8ffdccd7138927ffb8c0"
   integrity sha512-//oorEZjL6sbPcKUaCdIGlIUeH26mgzimjBB77G6XRgnDl/L5wOnpyBGRe/Mmf5CVW3PwEBE1NjiMZ/ssFh4wA==
 
+"@yarnpkg/lockfile@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@yarnpkg/lockfile/-/lockfile-1.1.0.tgz#e77a97fbd345b76d83245edcd17d393b1b41fb31"
+  integrity sha512-GpSwvyXOcOOlV70vbnzjj4fW5xW/FdUF6nQEt1ENy7m4ZCczi1+/buVUPAqmGfqznsORNFzUMjctTIp8a9tuCQ==
+
 JSV@^4.0.x:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/JSV/-/JSV-4.0.2.tgz#d077f6825571f82132f9dffaed587b4029feff57"
@@ -2575,6 +2580,17 @@ cosmiconfig@^7.0.0:
     path-type "^4.0.0"
     yaml "^1.10.0"
 
+cross-spawn@^6.0.5:
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
+  integrity sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==
+  dependencies:
+    nice-try "^1.0.4"
+    path-key "^2.0.1"
+    semver "^5.5.0"
+    shebang-command "^1.2.0"
+    which "^1.2.9"
+
 cross-spawn@^7.0.0, cross-spawn@^7.0.2:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
@@ -2627,11 +2643,6 @@ d3-voronoi@1.1.2:
   resolved "https://registry.yarnpkg.com/d3-voronoi/-/d3-voronoi-1.1.2.tgz#1687667e8f13a2d158c80c1480c5a29cb0d8973c"
   integrity sha1-Fodmfo8TotFYyAwUgMWinLDYlzw=
 
-d3@~3.5.5:
-  version "3.5.17"
-  resolved "https://registry.yarnpkg.com/d3/-/d3-3.5.17.tgz#bc46748004378b21a360c9fc7cf5231790762fb8"
-  integrity sha1-vEZ0gAQ3iyGjYMn8fPUjF5B2L7g=
-
 d@1, d@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/d/-/d-1.0.1.tgz#8698095372d58dbee346ffd0c7093f99f8f9eb5a"
@@ -3497,6 +3508,14 @@ find-versions@^3.2.0:
   dependencies:
     semver-regex "^2.0.0"
 
+find-yarn-workspace-root@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/find-yarn-workspace-root/-/find-yarn-workspace-root-1.2.1.tgz#40eb8e6e7c2502ddfaa2577c176f221422f860db"
+  integrity sha512-dVtfb0WuQG+8Ag2uWkbG79hOUzEsRrhBzgfn86g2sJPkzmcpGdghbNTfUKGTxymFrY/tLIodDzLoW9nOJ4FY8Q==
+  dependencies:
+    fs-extra "^4.0.3"
+    micromatch "^3.1.4"
+
 findup-sync@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/findup-sync/-/findup-sync-2.0.0.tgz#9326b1488c22d1a6088650a86901b2d9a90a2cbc"
@@ -3630,6 +3649,24 @@ fs-extra@3.0.1:
     jsonfile "^3.0.0"
     universalify "^0.1.0"
 
+fs-extra@^4.0.3:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-4.0.3.tgz#0d852122e5bc5beb453fb028e9c0c9bf36340c94"
+  integrity sha512-q6rbdDd1o2mAnQreO7YADIxf/Whx4AHBiRf6d+/cVT8h44ss+lHgxf1FemcqDnQt9X3ct4McHr+JMGlYSsK7Cg==
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
+fs-extra@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-7.0.1.tgz#4f189c44aa123b895f722804f55ea23eadc348e9"
+  integrity sha512-YJDaCJZEnBmcbw13fvdAM9AwNOJwOzrE4pqMqBq5nFiEqXUqHwlK4B+3pUw6JNvfSPtX05xFHtYy/1ni01eGCw==
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
 fs-minipass@^1.2.5:
   version "1.2.7"
   resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-1.2.7.tgz#ccff8570841e7fe4265693da88936c55aed7f7c7"
@@ -3687,6 +3724,12 @@ gauge@~2.7.3:
     strip-ansi "^3.0.1"
     wide-align "^1.1.0"
 
+geo-data-exchange@alexcojocaru/geo-data-exchange#v1.1.0:
+  version "1.1.0"
+  resolved "https://codeload.github.com/alexcojocaru/geo-data-exchange/tar.gz/502d3c0180462be022dab7d470ac737f972c312b"
+  dependencies:
+    leaflet "^1.5.0"
+
 geojson-equality@0.1.6:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/geojson-equality/-/geojson-equality-0.1.6.tgz#a171374ef043e5d4797995840bae4648e0752d72"
@@ -4621,6 +4664,13 @@ is-buffer@^2.0.2:
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-2.0.4.tgz#3e572f23c8411a5cfd9557c849e3665e0b290623"
   integrity sha512-Kq1rokWXOPXWuaMAqZiJW4XxsmD9zGx9q4aePabbn3qCRGedtH7Cm+zV8WETitMfu1wdh+Rvd6w5egwSngUX2A==
 
+is-ci@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/is-ci/-/is-ci-2.0.0.tgz#6bc6334181810e04b5c22b3d589fdca55026404c"
+  integrity sha512-YfJT7rkpQB0updsdHLGWrvhBJfcfzNNawYDNIyQXJz0IViGf75O8EBPKSdvw2rF+LGCsX4FZ8tcr3b19LcZq4w==
+  dependencies:
+    ci-info "^2.0.0"
+
 is-data-descriptor@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz#0b5ee648388e2c860282e793f1856fec3f301b56"
@@ -4963,6 +5013,13 @@ jsonfile@^3.0.0:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
+jsonfile@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
+  integrity sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=
+  optionalDependencies:
+    graceful-fs "^4.1.6"
+
 jsonlint@^1.6.2:
   version "1.6.3"
   resolved "https://registry.yarnpkg.com/jsonlint/-/jsonlint-1.6.3.tgz#cb5e31efc0b78291d0d862fbef05900adf212988"
@@ -5022,6 +5079,13 @@ kind-of@^6.0.0, kind-of@^6.0.2:
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.2.tgz#01146b36a6218e64e58f3a8d66de5d7fc6f6d051"
   integrity sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==
 
+klaw-sync@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/klaw-sync/-/klaw-sync-6.0.0.tgz#1fd2cfd56ebb6250181114f0a581167099c2b28c"
+  integrity sha512-nIeuVSzdCCs6TDPTqI8w1Yre34sSq7AkZ4B3sfOBbI2CgVSB4Du4aLQijFU2+lhAFCwt9+42Hel6lQNIv6AntQ==
+  dependencies:
+    graceful-fs "^4.1.11"
+
 last-run@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/last-run/-/last-run-1.1.1.tgz#45b96942c17b1c79c772198259ba943bebf8ca5b"
@@ -5070,10 +5134,6 @@ leaflet-editable@^1.1.0:
   resolved "https://registry.yarnpkg.com/leaflet-editable/-/leaflet-editable-1.2.0.tgz#a3a01001764ba58ea923381ee6a1c814708a0b84"
   integrity sha512-wG11JwpL8zqIbypTop6xCRGagMuWw68ihYu4uqrqc5Ep0wnEJeyob7NB2Rt5t74Oih4rwJ3OfwaGbzdowOGfYQ==
 
-leaflet-elevation@nrenner/Leaflet.Elevation#dev:
-  version "0.0.4"
-  resolved "https://codeload.github.com/nrenner/Leaflet.Elevation/tar.gz/9ae6a3caef5f01abb3e55e05376df2e0046f7449"
-
 leaflet-filelayer@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/leaflet-filelayer/-/leaflet-filelayer-1.2.0.tgz#9f822e68a06072b0b0a8f328ba9419ba96bbccb1"
@@ -5119,6 +5179,13 @@ leaflet-triangle-marker@^1.0.2:
   resolved "https://registry.yarnpkg.com/leaflet-triangle-marker/-/leaflet-triangle-marker-1.0.2.tgz#e4c5f1d09d10ae078f8fba87aa32e5884017ad96"
   integrity sha512-J2Xa5UgUV6rU04bcwAdQRptnLm7nSxDtxqfX0Nzb+tz6p3buyEEBkXdOvEgzD6ghuII6BVSXFb4QP8cyVKigXg==
 
+leaflet.heightgraph@1.3.3:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/leaflet.heightgraph/-/leaflet.heightgraph-1.3.3.tgz#14b8bac70ac16863991c16f5d6b772aad8034fbd"
+  integrity sha512-jr6xDmiTBvIIu1WLI0q0rt9E30H1VVTxncHAaojcpsZeDvYyBZyBsgoeEi8ouJVP9OolCfNQTCyPbNR73tKgqg==
+  dependencies:
+    leaflet "^1.6.0"
+
 leaflet.locatecontrol@^0.60.0:
   version "0.60.0"
   resolved "https://registry.yarnpkg.com/leaflet.locatecontrol/-/leaflet.locatecontrol-0.60.0.tgz#fc7be657ca9b7e8b8ba7263e52b0bb902b7cd965"
@@ -5150,6 +5217,11 @@ leaflet@^1.0.1, leaflet@^1.3.4:
   resolved "https://registry.yarnpkg.com/leaflet/-/leaflet-1.4.0.tgz#d5f56eeb2aa32787c24011e8be4c77e362ae171b"
   integrity sha512-x9j9tGY1+PDLN9pcWTx9/y6C5nezoTMB8BLK5jTakx+H7bPlnbCHfi9Hjg+Qt36sgDz/cb9lrSpNQXmk45Tvhw==
 
+leaflet@^1.5.0:
+  version "1.7.1"
+  resolved "https://registry.yarnpkg.com/leaflet/-/leaflet-1.7.1.tgz#10d684916edfe1bf41d688a3b97127c0322a2a19"
+  integrity sha512-/xwPEBidtg69Q3HlqPdU3DnrXQOvQU/CCHA1tcDQVzOwm91YMYaILjNp7L4Eaw5Z4sOYdbBz6koWyibppd8Zqw==
+
 leaflet@^1.6.0, leaflet@~1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/leaflet/-/leaflet-1.6.0.tgz#aecbb044b949ec29469eeb31c77a88e2f448f308"
@@ -5725,6 +5797,11 @@ next-tick@^1.0.0, next-tick@~1.0.0:
   resolved "https://registry.yarnpkg.com/next-tick/-/next-tick-1.0.0.tgz#ca86d1fe8828169b0120208e3dc8424b9db8342c"
   integrity sha1-yobR/ogoFpsBICCOPchCS524NCw=
 
+nice-try@^1.0.4:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
+  integrity sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==
+
 node-fetch@^2.6.1:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
@@ -6019,7 +6096,7 @@ os-locale@^1.4.0:
   dependencies:
     lcid "^1.0.0"
 
-os-tmpdir@^1.0.0:
+os-tmpdir@^1.0.0, os-tmpdir@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
   integrity sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=
@@ -6145,6 +6222,24 @@ pascalcase@^0.1.1:
   resolved "https://registry.yarnpkg.com/pascalcase/-/pascalcase-0.1.1.tgz#b363e55e8006ca6fe21784d2db22bd15d7917f14"
   integrity sha1-s2PlXoAGym/iF4TS2yK9FdeRfxQ=
 
+patch-package@~6.2.2:
+  version "6.2.2"
+  resolved "https://registry.yarnpkg.com/patch-package/-/patch-package-6.2.2.tgz#71d170d650c65c26556f0d0fbbb48d92b6cc5f39"
+  integrity sha512-YqScVYkVcClUY0v8fF0kWOjDYopzIM8e3bj/RU1DPeEF14+dCGm6UeOYm4jvCyxqIEQ5/eJzmbWfDWnUleFNMg==
+  dependencies:
+    "@yarnpkg/lockfile" "^1.1.0"
+    chalk "^2.4.2"
+    cross-spawn "^6.0.5"
+    find-yarn-workspace-root "^1.2.1"
+    fs-extra "^7.0.1"
+    is-ci "^2.0.0"
+    klaw-sync "^6.0.0"
+    minimist "^1.2.0"
+    rimraf "^2.6.3"
+    semver "^5.6.0"
+    slash "^2.0.0"
+    tmp "^0.0.33"
+
 path-dirname@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/path-dirname/-/path-dirname-1.0.2.tgz#cc33d24d525e099a5388c0336c6e32b9160609e0"
@@ -6177,6 +6272,11 @@ path-is-inside@^1.0.1:
   resolved "https://registry.yarnpkg.com/path-is-inside/-/path-is-inside-1.0.2.tgz#365417dede44430d1c11af61027facf074bdfc53"
   integrity sha1-NlQX3t5EQw0cEa9hAn+s8HS9/FM=
 
+path-key@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
+  integrity sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=
+
 path-key@^3.0.0, path-key@^3.1.0:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/path-key/-/path-key-3.1.1.tgz#581f6ade658cbba65a0d3380de7753295054f375"
@@ -6367,6 +6467,11 @@ postcss@^7.0.16:
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
+postinstall-postinstall@~2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/postinstall-postinstall/-/postinstall-postinstall-2.1.0.tgz#4f7f77441ef539d1512c40bd04c71b06a4704ca3"
+  integrity sha512-7hQX6ZlZXIoRiWNrbMQaLzUUfH+sSx39u8EJ9HYuDc1kLo9IXKWjM5RSquZN1ad5GnH8CGFM78fsAAQi3OKEEQ==
+
 prelude-ls@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.2.1.tgz#debc6489d7a6e6b0e7611888cec880337d316396"
@@ -6904,7 +7009,7 @@ rimraf@^2.2.8:
   dependencies:
     glob "^7.1.3"
 
-rimraf@^2.6.1:
+rimraf@^2.6.1, rimraf@^2.6.3:
   version "2.7.1"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.7.1.tgz#35797f13a7fdadc566142c29d4f07ccad483e3ec"
   integrity sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==
@@ -7007,7 +7112,7 @@ semver-regex@^2.0.0:
   resolved "https://registry.yarnpkg.com/semver-regex/-/semver-regex-2.0.0.tgz#a93c2c5844539a770233379107b38c7b4ac9d338"
   integrity sha512-mUdIBBvdn0PLOeP3TEkMH7HHeUP3GjsXCwKarjv/kGmUFOYg1VqEemKhoQpWMu6X2I8kHeuVdGibLGkVK+/5Qw==
 
-"semver@2 || 3 || 4 || 5", semver@^5.3.0:
+"semver@2 || 3 || 4 || 5", semver@^5.3.0, semver@^5.5.0, semver@^5.6.0:
   version "5.7.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
   integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
@@ -7120,6 +7225,13 @@ shallow-clone@^3.0.0:
   dependencies:
     kind-of "^6.0.2"
 
+shebang-command@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
+  integrity sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=
+  dependencies:
+    shebang-regex "^1.0.0"
+
 shebang-command@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-2.0.0.tgz#ccd0af4f8835fbdc265b82461aaf0c36663f34ea"
@@ -7127,6 +7239,11 @@ shebang-command@^2.0.0:
   dependencies:
     shebang-regex "^3.0.0"
 
+shebang-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
+  integrity sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=
+
 shebang-regex@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-3.0.0.tgz#ae16f1644d873ecad843b0307b143362d4c42172"
@@ -7147,6 +7264,11 @@ skmeans@0.9.7:
   resolved "https://registry.yarnpkg.com/skmeans/-/skmeans-0.9.7.tgz#72670cebb728508f56e29c0e10d11e623529ce5d"
   integrity sha512-hNj1/oZ7ygsfmPZ7ZfN5MUBRoGg1gtpnImuJBgLO0ljQ67DtJuiQaiYdS4lUA6s0KCwnPhGivtC/WRwIZLkHyg==
 
+slash@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/slash/-/slash-2.0.0.tgz#de552851a1759df3a8f206535442f5ec4ddeab44"
+  integrity sha512-ZYKh3Wh2z1PpEXWr0MpSBZ0V6mZHAQfYevttO11c51CaWjGTaadiKZ+wVt1PbMlDV5qhMFslpZCemhwOK7C89A==
+
 slash@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/slash/-/slash-3.0.0.tgz#6539be870c165adbd5240220dbe361f1bc4d4634"
@@ -7783,6 +7905,13 @@ tinyqueue@^1.1.0:
   resolved "https://registry.yarnpkg.com/tinyqueue/-/tinyqueue-1.2.3.tgz#b6a61de23060584da29f82362e45df1ec7353f3d"
   integrity sha512-Qz9RgWuO9l8lT+Y9xvbzhPT2efIUIFd69N7eF7tJ9lnQl0iLj1M7peK7IoUGZL9DJHw9XftqLreccfxcQgYLxA==
 
+tmp@^0.0.33:
+  version "0.0.33"
+  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
+  integrity sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==
+  dependencies:
+    os-tmpdir "~1.0.2"
+
 to-absolute-glob@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/to-absolute-glob/-/to-absolute-glob-2.0.2.tgz#1865f43d9e74b0822db9f145b78cff7d0f7c849b"
@@ -8170,7 +8299,7 @@ which-pm-runs@^1.0.0:
   resolved "https://registry.yarnpkg.com/which-pm-runs/-/which-pm-runs-1.0.0.tgz#670b3afbc552e0b55df6b7780ca74615f23ad1cb"
   integrity sha1-Zws6+8VS4LVd9rd4DKdGFfI60cs=
 
-which@^1.2.14:
+which@^1.2.14, which@^1.2.9:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
   integrity sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==