Molten region of the center of the Earth

The molten region of the Center of the Earth is an incredibly hot region of the Earth's core. Humans cannot survive there for a long period of time. The Monolith is located in this region.

Locations

 * Lava River

Inhabitants

 * Fire breathing dragon
 * Lava monster

Appearance
Super Friends
 * Season 3: Monolith of Evil