Overview
Sotha was the home of the Scythes of the Emperor until Hive Fleet Kraken consumed it and very nearly the Chapter with it.
The survivors' war of vengeance is one of the Imperium's grimmest small epics.
The marker stands for every quiet world that learned how little quiet is worth.
M41 and M42 status
Quiet chapter world of the Scythes of the Emperor.
Dead world scoured by Kraken, still watched and slowly restored by the Scythes' remnants.
Timeline
Hive Fleet Kraken descends upon the Sotha system.
The fortress-monastery falls; the Chapter is reduced to remnants.
Rift darkness closes over the dead world.
Scythes of the Emperor remnants keep watch over the scoured world and its Pharos ruins, working its slow restoration.
Cartographic positions and several administrative details are intentionally approximate where published Warhammer sources conflict or provide no canonical coordinate system.