|Map||Basic Data||Planetary Image|
|Affiliation:||Unknown, former Imperium|
|Class:||Dead World, former Hive World|
The population of Fell Core began to rebel against the Imperium and the Imperial Guard was brought to the planet to put down the rebellion (among them the 35th Octobian Regiment). During the fighting the Guard would discover that a Genestealer Cult was behind the rebellion and the Space Marines would come to Fell Core, to destroy the Genestealer infestation. They succeeded, but it was too late as Tyranid spores would soon rain down on the planet. Though the Imperium fought to save Fell Core, the Tyranids soon overwhelmed them and what survivors could be saved were evacuated, before an Exterminatus was carried out, destroying the planet.