Atlea and Beyond
The Shadowfell is the realm of the dead. Souls pass through this place before they ultimately reach the other side, and undead creatures roam the land. The Shadar-kai protect the souls before they pass to the other side, as many creatures in this realm feast upon the souls that are not protected. It forms part of the triptych of The Fey, Atlea (the world) and The Shadowfell.