You realize that this is an excellent spot for an ambush and watch the path in front as well as the rocks above. Nothing happens, however, and after a hundred feet you get to a circular pit about 20 feet in diameter.

The walls still tower about 10 yards above you. In the middle you detect a small black hole.

Enter the circle with your entire party, or send 1 person into the circle as a scout, or return to the entrance of the cleft.