This shaft heads downward into darkness. The shaft appears to be extremely deep. A chain runs down the center of the shaft, attacked to the winch mechanism in the Old Main Shaft Room. Next to the winch mechanism is a large wooden platform, in two sections with a hole in the center. The platform seems designed to be attached to the winch and chain mechanism., In addition a ladder attached to the side of the shaft leads downward.
The Old Main Shaft is the main vertical shaft that services the Old Mines in Cerro Rico. The shaft was built later in the life of the mine, replacing a series of Traverses that were a more roundabout and far less efficient way of reaching the lower extents of the mine..
The Old Shaft is a relatively narrow square shaft, around 8 feet across. It was built to accommodate a single platform approximately 6 feet across that can be raised and lowered via a winch mechanism and central chain running down the center of the shaft. In addition to the shaft, an access ladder runs along one wall.
Approximately 100 meters down the shaft, it exits the physical world and enters The Shadowlands
Impassable to corporeal beings at least. Shadows occasionally slip through the small cracks and crevasses from the lower levels into the upper.