Ardamantua was a world of the Imperium.
A dark volcanic world, Ardamantua was invaded by the Xenos known as Chromes in mid-M32. The Imperial Fists and Imperial Guard responded to the threat, and it became apparently the aliens were in fact fleeing from the powerful Ork Warboss known as The Beast.[1b] In the opening shots of the War of the Beast, the Ork Attack Moon annihilated the imperial forces and "recharged" by consuming Ardamantua with tractor beams. The planet was shattered[1a], though the badly injured Imperial Fist Koorland was nonetheless recovered from its remains.