Cil-Aumûl was one of the nine High Mansions of the Nonmen. It was located in the Hinayati Mountains and was the southern-most of the High Mansions. It was founded in the second wave of Nonman expansion and, given its proximity, may have been founded by Illisserû.
Cil-Aumûl fought as part of the Nonman coalition during the Cûno-Inchoroi Wars, although the level of its involvement given its vast distance from the Incû-Holoinas is unknown. Like the other Mansions, it suffered the debilitating effects of the Womb Plague and was then destroyed during the Cûno-Halaroi Wars. The later fate of the Mansion is unknown.
- Encyclopedia Glossary II, 'Nine Mansions'