While the cave itself is natural, the entrance to the cave is concealed by a rock with a keyhole in it. This rock is opened with a Brass Key. Inside the cave is a twisting path. This path exits at a point near the gate to the Brigand Fortress. The cave is occupied by a Troll named Fred. The pass through the rocks is used as a "back door" to the Brigand Fortress by both Bruno and Brutus. In the EGA version, the cave extends further to the west, where Fred keeps a pile of flotsam he has taken from those that he has killed.