Abomination's graveyard

The "abomination's graveyard" was a site with a large quantity of bones of members of the Great Houses mutated into bestial shapes by the Yssgaroth taint. The graveyard was discovered by Grandfather Paradox's original Godfather-lieutenants and used in Faction Paradox armour.

The Book of the War concluded that it came from a timeline where the Houses lost the first War in Heaven, which would only be accessible through the caldera. (PROSE: The Book of the War)