From Bulbapedia, the community-driven Pokémon encyclopedia.
Crossgate Town (Japanese: クロスゲートタウン Crossgate Town) is an anime-exclusive location in the Hoenn region. It is a small village nestled among mountains that are located somewhere between Littleroot Town and Fortree City. It appeared in That's Just Swellow.
According to Brock, Crossgate is known as "the crossroad of the winds". Indeed, the town is famous for its powerful tornadoes, as well as its annual PokéRinger tournament. Trainers from all around the world come with their Flying-type Pokémon and try to become an honorary citizen of Crossgate Town.
Some of the town's residents include Shane and Volt, both competitors in the Crossgate PokéRinger. Ash was made an honorary citizen after he won the competition.