diff --git a/static/js/layers/gdelt.js b/static/js/layers/gdelt.js
index 73f156b..855b7a9 100644
--- a/static/js/layers/gdelt.js
+++ b/static/js/layers/gdelt.js
@@ -47,7 +47,7 @@ const GdeltLayer = {
                         color: Cesium.Color.fromCssColorString('#ff8800'),
                         outlineColor: Cesium.Color.fromCssColorString('#663300'),
                         outlineWidth: 1,
-                        heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
+                        heightReference: Cesium.HeightReference.NONE,
                         disableDepthTestDistance: Number.POSITIVE_INFINITY,
                     },
                     description: '<div style="font-family:monospace;font-size:12px;color:#ff8800">' +
diff --git a/static/js/layers/quakes.js b/static/js/layers/quakes.js
index b23b982..8e2f72e 100644
--- a/static/js/layers/quakes.js
+++ b/static/js/layers/quakes.js
@@ -56,7 +56,7 @@ const QuakesLayer = {
                         outline: true,
                         outlineColor: color.withAlpha(1.0),
                         outlineWidth: 1,
-                        heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
+                        heightReference: Cesium.HeightReference.NONE,
                     },
                     description: '<div style="font-family:monospace;font-size:12px;color:#ff6644">' +
                         '<strong>M' + mag.toFixed(1) + '</strong> ' + (p.place || '') + '<br>' +
diff --git a/static/js/layers/ships.js b/static/js/layers/ships.js
index 4810f9e..32e923d 100644
--- a/static/js/layers/ships.js
+++ b/static/js/layers/ships.js
@@ -49,7 +49,7 @@ const ShipsLayer = {
                         color: color,
                         outlineColor: Cesium.Color.fromCssColorString('#112244'),
                         outlineWidth: 0.5,
-                        heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
+                        heightReference: Cesium.HeightReference.NONE,
                         disableDepthTestDistance: Number.POSITIVE_INFINITY,
                     },
                     label: {