Mt.Heerbaun is a small town located in a dormant volcano, in north-east Axyllia. The town is famous for its hot springs. The local source of energy is steam energy. It is said that a mysterious Pokémon is the city's guardian.
The Gym Leader is Hazy, a specialist in Water-type Pokémon.
South of the town is Route 24. North of the town is Route 25.
The player will battle together with Hazy against some Team Noll's grunts, tasked with stealing the town energy and to find it's guardian Pokémon (Groudon).