Together, four of you manage to move the stone, slowly rolling it to the side. It reveals another chamber.
This square room is starkly devoid of any markings or adornment. In the center of the chamber’s floor, a square shaft drops straight down into darkness. A faint musty odor rises from the pit. A single piton has been hammered into the stone floor by the northeast corner of the pit, and a dusty length of rope dangles from the piton into the darkness of the shaft.
How are you going to keep the wheel from rolling back and blocking your path out, or is that a problem only for future you?