Dolurrh

Dolurrh, The Realm of the Dead is one of the Planes of Eberron.

Dolurrh is a hopeless gray waste where mortal souls go after death. It is not a reward, nor a punishment, it simply is. For those on the plane of Dolurrh, colors become grayer and less vivid, and visitors experience a feeling of ennui. Those that visit the plane sway under its influence, losing the desire to leave, and eventually forgetting their previous lives. These visitors eventually become shades, and native to Dolurrh. For visitors trapped in Dolurrh, only the most powerful of magics can free them.

While most Inevitable live on Daanvi, the maruts are native from Dolurrh, and are known to pursue the souls of those who cheat death, like vampires and rogues.