Head Thwomp (グルン Gurun?) is the boss of the Wing Dungeon, the second dungeon in The Legend of Zelda: Oracle of Ages. It is a superior Thwomp that attacks Link using a slamming attack. Head Thwomp is a floating rock that spins, alternating between purple, blue, green and red faces. As it spins, it periodically shoots out large fireballs and bombs. The only way to defeat Head Thwomp is to throw bombs into the top of it; however, the way the bomb affects it depends on which face is showing. It is the only boss fought in the two-dimensional platform system found in the game.