diff --git a/island.ts b/island.ts
index 3064cbc..7a011a8 100644
--- a/island.ts
+++ b/island.ts
@@ -159,10 +159,11 @@ export function IslandApplet() {
 
   function tick() {
     const islandTiles = islands.floodSearch(basePos, (tile) => tile > 0);
+    drop(islandTiles[islands.rng() % islandTiles.length]);
+    drop(islandTiles[islands.rng() % islandTiles.length]);
 
-    drop(islandTiles[islands.rng() % islandTiles.length]);
-    drop(islandTiles[islands.rng() % islandTiles.length]);
-    drop(basePos - 8);
+    const mountainTiles = islands.floodSearch(basePos - 8, (tile) => tile > 3);
+    drop(mountainTiles[islands.rng() % mountainTiles.length]);
 
     const erodePos = islandTiles[islands.rng() % islandTiles.length];
     islands.data[erodePos] = Math.max(islands.data[erodePos] - 1, 0);