Altar of the Moone

Altar of the Moone is a location on Poni Island in Alola, located at the far end of Vast Poni Canyon. While ordinarily it is only accessible in Pokémon Moon and Pokémon Ultra Moon, it can be accessed in Pokémon Sun and Pokémon Ultra Sun after becoming Champion by traveling through the Ultra Wormhole at the Altar of the Sunne. During the story of Pokémon Moon, the player travels to Ultra Space from the Altar of the Moone using Lunala's power.