|Map||Basic Data||Planetary Image|
|Class:||Adeptus Astartes Homeworld|
|Tithe Grade:||Aptus Non|
Sometime after the creation of the Great Rift, the Tau Empire began a purge against the population of Allhallow due to a psychic plague affecting its population. Secretly, the Tau were assisted by the Angels of Absolution's parent chapter, the Dark Angels.