Duat

The Duat, the Realm of the Dead, was an aspect of the Egyptian afterlife. It was in the Duat that the recently deceased had their Ba weighed against a feather by Anubis; those whose Ba, or soul, weighed lighter then the feather were allowed to pass on to the heavenly paradise of Aaru.

History
Around 38 BCE, the Mentor of the Hidden Ones in Egypt, Bayek of Siwa, seemingly travelled to the Duat in order to combat the disembodied spirit of Tutankhamun, which had been returned to the world of the living thanks to the Curse of the Pharaohs that was plaguing the city of Thebes.

Trivia

 * In Egyptian mythology Ra, the sun god battled the great serpent Apep every night within the Duat, in order to ensure the sun would rise again on the mortal realm the next morning.

Appearances

 * Assassin's Creed: Origins - The Curse of the Pharaohs