The Lava Chamber is a cave lined with lava that is under the Seaside Hill. This location is the last place to go when attempting the Ex Hoc Mundo Quest. To access the Lava Chamber you need to activate all 5 buttons that are scattered around the world, and return to the Seaside Hill.

Special audio plays when here.

Seaside hill

The Lava Chamber Entrance Point before all buttons are activated

Rainbow hill

The Lava Chamber Entrance Point after all buttons are activated

Lava chamber

Bird's Eye View of the Lava Chamber Entrance after all buttons have been activated