The '''Skull Key''' is used to unlock the [[Skull Dungeon]]. The Skull Dungeon resides in a cave in the top-left hand corner of the [[Calico Desert]], accessed by the bus. | The '''Skull Key''' is used to unlock the [[Skull Dungeon]]. The Skull Dungeon resides in a cave in the top-left hand corner of the [[Calico Desert]], accessed by the bus. |