diff --git a/viewer/MinedMap.js b/viewer/MinedMap.js
index c9ae2d3..e4c8203 100644
--- a/viewer/MinedMap.js
+++ b/viewer/MinedMap.js
@@ -40,12 +40,14 @@ const signIcons = {};
 
 function signIcon(material, kind) {
 	function createSignIcon(material, kind) {
-		const params = signKinds[kind];
+		const {iconSize, popupAnchor} = signKinds[kind];
 
 		return L.icon({
 			iconUrl: `images/icon/${material}_${kind}.png`,
-			iconSize: params.iconSize,
-			popupAnchor: params.popupAnchor,
+			iconSize,
+			popupAnchor,
+			shadowUrl: `images/icon/shadow_${kind}.png`,
+			shadowSize: [iconSize[0]+8, iconSize[1]+8],
 			className: 'overzoomed',
 		});
 	}
diff --git a/viewer/images/icon/shadow_hanging_sign.png b/viewer/images/icon/shadow_hanging_sign.png
new file mode 100644
index 0000000..dbd19a6
Binary files /dev/null and b/viewer/images/icon/shadow_hanging_sign.png differ
diff --git a/viewer/images/icon/shadow_hanging_wall_sign.png b/viewer/images/icon/shadow_hanging_wall_sign.png
new file mode 100644
index 0000000..771cef5
Binary files /dev/null and b/viewer/images/icon/shadow_hanging_wall_sign.png differ
diff --git a/viewer/images/icon/shadow_sign.png b/viewer/images/icon/shadow_sign.png
new file mode 100644
index 0000000..9bf1cde
Binary files /dev/null and b/viewer/images/icon/shadow_sign.png differ
diff --git a/viewer/images/icon/shadow_wall_sign.png b/viewer/images/icon/shadow_wall_sign.png
new file mode 100644
index 0000000..fe46765
Binary files /dev/null and b/viewer/images/icon/shadow_wall_sign.png differ