The Realm of Fire, also called the Plane of Fire, was one of the Elemental Realms of the Cosmic Wheel. Unlike the other three elemental planes, the Plane of Fire had gravity and a landscape similar to the Material Realm, although most of the "ground" was made primarily of loosely packed elemental fire. Visibility was hampered by the smoke coming off the flames engulfing every aspect of the plane.
The plane experienced weather, with rains of hot ash moving about like thunderstorms, and clouds of superheated steam blew around the atmosphere. Rivers of magma and "firefalls" were also commonplace along the coal-like grounds.