Pillar of Skulls

The Pillar of Skulls is a hideous landmark with skulls ranging from gnome size to the size of a palace. No-one in Baator knows whose skulls they are, but the devils say that the are the skulls of the victims of the blood war. Those unfortunate enough to be absorbed into the pillar will keep their mind and consciousness but exist only as a single skull in an endless filthy rotting pile. The pillar towers miles into the sky of Avernus and up close it can be seen writhing and shaking, skulls surface and sink on it's surface and the endless chorus of chattering skulls can be heard for miles around. It is said that the skulls of the truly wicked, cowardly, and the greatest liars and betrayers are the only non-demon occupants of the pillar. There are those who attempt to bargain with the pillar to gain some specific knowledge contained by one or any of the resident skulls, it will answer, but in return a sacrifice must be made... It likes warm flesh most of all, but will accept information it deems important, it controls a large battalion of devils on Avernus and orders troops to fight frequently in the Blood War.