The Archaist Strongholds were a string of Fortress Worlds, that were held by a divergent strand of Humanity during the Great Crusade. They were ruled over in turn by a vast Abominable Intelligence, but this ended after the Strongholds were razed by Legio Metalica.[1]
Sources
- 1: Adeptus Titanicus: Loyalist Legios, pg. 79