Smoking Mountain (Japanese: 大ケムリ山Big Smoke Mountain) is a playable dungeon the player goes through in Pokémon Mystery Dungeon: Gates to Infinity. It has 24 floors and no boss. This dungeon is accessible after completing the main storyline. The seventh, 14th, and 20th floors have a red-locked door surrounded by flames which requires a Water-type Pokémon and a Red Key to pass through. Monster Houses can sometimes appear on floors in this dungeon, the final floor of the Golden Chamber will always contain a Monster House in the same room as where the Training Switch and a hidden Spiky Trap is located.