As Ming-Fu unlocks the central column and the door slides open, the group is greeted by the sight of a hollow shaft, like a chimney from a giant's castle, ten feet in diameter. Green fibrous material lines its walls, and a thick, vine-like cable hangs down the center from some unknown location in the darkness above. For all save Ming-Fu, their eyes pierce the darkness to perceive the vine-like cable terminating twenty feet below, seemingly fastened to what looks like a metal plate.