Mt. Horn (Japanese: ツノやまMt. Horn) is a dungeon in Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness and Pokémon Mystery Dungeon: Explorers of Sky. It is unlocked after clearing Craggy Coast. The dungeon consists of 14 floors. On the first visit, Bidoof will accompany the player. During the first visit the player must also choose between Rock Path and Mt. Horn. If he or she chooses Rock Path, he or she must traverse five additional floors, bringing the total floors of Mt. Horn to 19. This dungeon is also the first to have boxes dropped from fainted foes. To open them, the player will have to let Xatu appraise them at his shop in Treasure Town for a small fee of 150 Poké.
