The Underworld

The Underworld is the domain of Hades, the god of the underworld. It consists of a large, skull-like structure where The Fates reside. It also houses the River of Souls. Occasionally, it's eyes, nose an pillars emanate a large, orange glow when Hades gets angry. It connects the floor to the ceiling like a large pillar. It could be the Underworld itself, or a part of it.