diff --git a/init.lua b/init.lua
index c12fef0..358806f 100644
--- a/init.lua
+++ b/init.lua
@@ -165,4 +165,14 @@ if minetest.get_modpath("rangedweapons") then
 	minetest.clear_craft({
 		output = "rangedweapons:40mm"
 	})
-end
\ No newline at end of file
+end
+
+default.cool_lava = function(pos, node)
+	if node.name == "default:lava_source" then
+		minetest.set_node(pos, {name = "default:obsidian"})
+    else -- Lava flowing
+		minetest.set_node(pos, {name = "default:obsidian"})
+	end
+	minetest.sound_play("default_cool_lava",
+		{pos = pos, max_hear_distance = 16, gain = 0.2}, true)
+end