A network of passages and chambers beneath the oldest portions of the city, predating the Kaarn Crossing and possibly the arrival of any sapient species other than the Carceri. The Catacombs are not fully mapped. They connect to Ringhollow, to the foundations of the Annex, and to locations that should not be accessible from their apparent starting points. The Chroniclers maintain partial records of expeditions into the Catacombs, and the consistent observation across centuries of documentation is that the passages change between visits. It is, perhaps ironically, one of the few places where the dead seem incapable of rising. That does not make them safe; there are plenty of living things lurking in the dark of the deepest tunnels just as dangerous as any ghast.