Under-Mousillon is a minor Skaven stronghold held mostly by Clan Pestilen. The Bretonnian city of Mousillon has been under a terrible curse for many, many years. It was struck by a powerful earthquake long ago, and has never full recovered. The Human city continues to sink slowly deeper into the stagnant earth that surrounds it, even as plagues from below seep up to take their toll on the few residents that remain. Clan Pestilens has since taken up residence in the sewers and tunnels beneath Mousillon, even as the city that once lay above them gradually sinks to merge with their own horrible metropolis. Vying for resources are a great number of Ghouls, purportedly led by the Cannibal Knight, who presides over his court in a twisted mockery of the lands above.[1a]