Ghaslakh

Ghaslakh is an Eastern Fringe Ork capital, the xenohold Horus used as the excuse to muster Ultramarines and Word Bearers on Calth. This Ultima pin is that possibly-real empire, rimwards of Sotha.

Warmaster orders called it a rising threat. Ultramarines patrols found some Orks hitting Golsoria, then fewer than advertised. After the Heresy, scholars argued whether Ghaslakh ever existed or was only a stage-mark for the Calth betrayal. Enough reconnaissance survived that the question never quite closed.

Ghaslakh still matters as the Calth pretext world. Unofficial summaries keep the Ultima parent and do not merge this Ork rock with Ullanor or Charadon.