Ragged Mountain (Japanese: でこぼこ山Bumpy Mountain) is the first dungeon the player goes through in Pokémon Mystery Dungeon: Gates to Infinity. The dungeon has both an inside area (1F, 2F, 4F) and an outside area (3F, 5F). It has five floors and no boss. This is the first dungeon that has sparkling obstacles that need to be attacked in order to progress through the dungeon, which is the dead tree at 3F. After the main storyline, this dungeon does not have a Golden Chamber or a Mapless Street.