Pillar of Skulls

The Pillar of Skulls was a landmark in the plane of Avernus, the first layer of the Nine Hells. It contained the skulls of victims of the Blood War, taken as trophies by the devils.

The Pillar towered over a mile (over 1.6 km) into the sky of Avernus. It comprised a wide variety of skulls, ranging from the tiny to the size of a house. The majority, however, were of demons, the enemy of the devils.

It stood by the ledge around the layer of Avernus, near a low point where access to the next layer down, Dis, was possible via an exceptionally tall spire in that city. Near the base of the Pillar of Skulls was a huge cave mouth, in which laired the dragon-goddess Tiamat, who guarded passage between the layers here.