Malebolge

Malebolge, also known as the Bones of Hell, is one of the nine kingdoms of Shadowfell. Ruled by King Zagan, it appears as a large funnel of stone shaped like an ampitheatre, around which run a series of ten deep, narrow concentric ditches or trenches. It is an unending expanse of hanging cages, narrow stone platforms, and iron bridges.

From the foot of the Great Cliff to the Central Well of Malebolge are large spurs of rock, not unlike umbrella ribs or spokes, which serve as bridges over the ten ditches. There is also a lake of boiling pitch. Its sky is permanently clouded by ash and fire.

Points of interest

 * Central Well of Malebolge
 * Great Cliff
 * Palace of Delusion

Etymology
Malebolge literally means "evil ditches".