Sootopolis City is located inside a crater formed by a volcano. Many years ago, an underwater volcano erupted and forced itself up from the depths creating a crater, the hollowed volcano. Its crater emerged from the sea and became filled with rainwater. People soon started to dwell in the crater for its warm, fresh water and a city soon came forth. To get around the city, people have to climb many flights of stairs and Dive under the sea. Because of this, many of the locals are in good shape. Sootopolis has a fantastic nighttime view, the stars peer in through the top of the crater.

In the Pokémon games, Sootopolis can only be reached by diving through an underwater cavern or by Flying. Sootopolis is surrounded by Route 126.

Wallace, is the Gym Leader in this town. He uses Water-type Pokémon, and is the one who hands out the eighth Gym Badge of Hoenn. However,