Lake of Fire

According to the Book:

Volcanoes and fire pits fill the Demon Wastes. At night, the clouds of ash and smoke glow with the reflected light of lava and flame. Stories say that each volcano marks the prison of one of the mighty fiends trapped below the earth at the end of the Age of Demons.
The most impressive of these is the Lake of Fire—a vast volcano with a crater almost a mile across. There are a host of legends about the Lake of Fire: stories of fiendish monsters that have emerged from the lake, of powerful artifacts thrown into the lava now waiting to be recovered, and of the mighty fiend bound below that waits to be unleashed. Some say that sorcerers and wizards who travel to the lake can draw on its power to perform astonishing feats of evocation. True or not, the Lake of Fire is an impressive landmark that seems to act as a beacon for the fiendish creatures of the region, making it a dangerous place for mortal travelers to visit.

Type

Volcano