Greydirge is in the foothills of the Shattered Range, in the land of Geb. The normal custom of Geb is to re-animate its citizens as undead once they die. Greydirge is built out of the bones of those Gebbites who were unwilling or unable to be reanimated. Its inhabitants no doubt have their own reasons for living in a city-sized ossuary. Its one notable feature is the Empty Threshold, a temple of Zon-Kuthon.