There is a 60' deep dungeon, the first level is the cellar; in the cellar there is a stair column from the bottom to top that leads to a secret exit on the bottom level to the east.
Under the middle tower of the fortress compound (B wall and a burned door) near it is a concealed 2' high hole/ exit. 10' in is a vertical shaft, the passage continues east. 10' up the shaft is a ladder of iron rungs set into the wall. A projection opposite the rungs, closes the bottom of the shaft off. 40' up the shaft is a chamber of a 20' diameter. The shaft comes up 3' from the wall. The ceiling is domed and the apex is 13.5' above the floor.
A pile of filthy rags lies a short distance from the shaft and an ancient lantern is on the opposite side of the shaft. The air is stale and stagnant. A large worm creature of about 10 hp lies within the rags. A secret door opposite the shaft pivots open to reveal a narrow corridor, which ends when it meets a 10' wide perpendicular corridor. To the left lies a pillared arched room with 5 exits and a stairway up. Going right leads to a narrow stairway with a heap of clothing. At the top of that stair is a manure pile. a wooden ladder is at the far end, the trap door at the top leads to a shed in Ratswarf on Tannery Street by Umber Stream.
They attack northward with the Great Kingdom at the beginning of Come Endless Darkness. They hold the Initiator and relinquish it to the Dukes of Hell.