Duat
From WikiRaider
Duat is the ancient Egyptian underworld. In Lara Croft and the Temple of Osiris the evil god Set is freed from Duat when Carter Bell touches the Staff of Osiris. In order to again imprison him there, Lara, Carter, Isis, and Horus have to travel through the tombs of the game and defeat the undead minions Set raises while being chased by Ammit, the Devourer of Souls.