Stalinvast was once a rich and thriving Hive World covered in coral-like city growths, between which grew vast blue-green jungles filled with teeming life and vicious predators. It was used in the manufacturing of weapons for the Imperium of Man, and became the site of a Genestealer-instigated rebellion against the Imperium in the early 39th Millennium. The planet was later the target of a falsified Exterminatus Order, and was subsequently reclassified as a Dead World.