Magic School discussion

The Underworld is one of the several planes of existence. It is a place where evil beings, most notably demons, live and practice their black magic. Most demons were born, hatched, or created here. It is a place many would describe as hell which contains deep underground chambers, caverns, and volcanoes. It is a dark place due to the limited light which only comes from lit torches, fires, and even cracks in the walls.
Wyatt in Underworld
The Underworld, as its name suggests, is under the surface of the Earth. It is a vast place, too vast for any good being not familiar with it, to travel through it accurately, without the help of a demon.

(travels down to the underworld to visit cousin)