The Halls of Karad-Dun are a poorly understood extradimensional and extrauniversal realm of existence where the souls of dead sentient beings go following their deaths. The Halls are ruled by Karad-Dun, God of Death, and branch into various afterlives. The Halls seem to sit outside of the Abyss, though it is unknown how Karad-Dun manages to place His Halls so separated from the rest of existence.
The Halls as depicted in a Nemishite codex. Karad-Dun is depicted as a seated mummy god.