human
Please generate a short description of a suspenseful scene outside of a chasm with ropes, tower, and pillars.
assistant
The trail from the south comes to an end at a half-built stone tower on the edge of a chasm. Above the unfinished walls of the tower rise two granite pillars, from which thick ropes extend hundreds of feet across the canyon. Large metal pulleys suspended between the pillars creak as they turn ceaselessly.