Indeed, the dim light filtering in through the main entrance is barely enough to light the first foot or three of the shaft's edges, before vanishing into the gloom. The piton is rusty but solidly-set, which is a good thing - Tgamo can tell it's a long way down. When he picks uop the rope, it's crumbly and rotten in his hands, fibers fraying just from handling it... There's two knots in it, and then... nothing. Five feet of dry-rotted rope, for a pit that is most assuredly deeper than five feet.