Incaladion

Incaladion is an Ultima forge established during the Age of Strife and formerly the home of Legio Fureans, the Tiger Eyes. It was founded on deposits of rare minerals amid unstable Warp conditions.

During the Great Crusade, the Iron Warriors besieged the forge for approximately one year and lost almost thirty thousand legionaries in taking it. Incaladion subsequently pledged allegiance to Horus, and the forge was then torn apart by internal conflict.

Despite this history, the Adeptus Mechanicus of Mars retained possession of the forges. 40k Orrery marks the location as Chaos-aligned, since later warbands repeatedly contested that outcome.