|Unknown, near Cadian Sector
|Unknown (formerly Chaos)
During the Psychic Awakening, Dessah became home to the Shriven and Fabius Bile. During the final stage of the War of the Spider it was simultaneously attacked by both the Death Guard and Adeptus Custodes. During the battle the Shriven were shattered while the Death Guard and Custodes withdrew, leaving the current status of the world unknown.