Question: where is the unknown dungeon in pokemon x?
Answer: The Unknown Dungeon (Japanese: ななしの洞窟 Nameless Cave) is a very small cave in southern Kalos that can be accessed from Pokémon Village. A sole Mewtwo resides in the center with a game-specific Mewtwonite. The Unknown Dungeon is only accessible to Trainers who enter the Hall of Fame. Surf is needed to access the cave.