Cave-In is a Geomancer's Terrain ability in the Nintendo DS version. It deals Earth-elemental damage to all enemies, and has a 38% chance of being used in the following terrains: Desert, Altar Cave, Mythril Mine, Sealed Cave, Tozus Tunnel, Cave of the Circle, Ancient Ruins, Ancients' Maze, Doga's Grotto, Cave of Shadows, Bahamut's Lair, and Falgabard.