|This fantastic image can be seen in greater detail here.|
Perhaps it is in the Empire of the Ossiarchs, where Liches rule over skeletal armies. Or perhaps it is in the lost lair of the Bone Savants -- the masters of the magics of bone and blood.
Wherever it is, it is said that those who know how may speak with the spirits of these skulls. In life, they were wizards, mages, and loremasters of great power and knowledge. Many were plucked from their graves, some were taken forcibly in life, and a few were -- ahem -- rescued from otherwise ignominious fates across Enigmundia to find final refuge here.