(place) by ModernAngel Mon Mar 13 2000 at 6:34:49
In AD&D, the Outer Plane of Lawful Evil. Inhabited by devils (called baatezu in AD&D 2E). Subdivided, predictably enough, into 9 planes ("hells"), each ruled by an archdevil. Modelled loosely on The Inferno.

AD&D: the Outer Planes
I like it!