Sky Pillar, Pokémon Wiki

The Sky Pillar (そらのはしら, Sora no Hashira) is a huge tower located in Hoenn located at Route 131. Appearing in Ruby, Sapphire, and Emerald, it is the only place in the game where the player can encounter (and catch) Rayquaza. Many other species of high-level Pokémon also inhabit it, such as Dusclops and Altaria. During the conflict between Groudon and Kyogre, the player travels to Sky pillar separately with Wallace where Wallace unlocks the door so, player can meet Rayquaza at the top floor. Howev

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