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Unknown Dungeon is a cave in Kalos. It can only be accessed once the Pokémon League has been defeated.

To reach Unknown Dungeon one must travel through Winding Wood to the Pokémon Village and bring a Pokémon who knows Surf. One can surf to the entrance and go inside where Mewtwo is located.

Pokémon

Mewtwo XY
Mewtwo
Level:
70
Type:
Type Psychic
Ability:
Pressure
Held item:
None


Items

After defeating/capturing Mewtwo