Rock Path (Explorers of Time, Darkness, and Sky)

Rock Path (Japanese: いわのよこあな Rock Tunnel) is an optional dungeon in Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness and Pokémon Mystery Dungeon: Explorers of Sky that is only available after completing Craggy Coast and before completing Mt. Horn. Like the dungeon with the same name from the first pair of games, Rock Path exists solely for experience, as the first time Mt. Horn appears, the player is on a guild expedition and can't return to Treasure Town.

In other languages
Felspfad (Pokémon Mystery Dungeon 2) Chemin Rocheux (Donjon Mystère) いわのよこあな (探検隊) 岩石横穴（时暗空探险队）