>>95954646
>Phlegethos, the Fourth Hell
Phlegethos is a long, twisting cavern world about thirty miles wide, two hundred miles long, and one to ten miles in height. Curtains of lava pour down from fissures in the ceiling of this hell to pool in great lakes of molten rock or race riverlike along slag-splattered courses. Mountainous volcanoes that contribute to the fiery destruction rise from the cavern floor. The air is scorching hot and flecked with ash.