New Mauville

New Mauville is a power plant located underneath Mauville City in Hoenn. Due to its unique location, the complex can only be reached by Surfing east from Route 110 under the Seaside Cycling Road to a small island east of the overhead path. It was originally intended to be an underground city, before it was found that it served as a habitat for wild Pokémon. In Generation VI, New Mauville has a special magnetic field that causes Magneton and Nosepass to evolve into Magnezone and Probopass, respectively, when leveled up here.