The passages at the bottom, leading from Hensler's Master Cave to the chamber where the last pitch of Disappointment Pot enters the system were found by Eric Hensler in 1937 when he discovered over of passage in Gaping Gill on a solo trip.
12.
"' Disappointment Pot "'is one of the entrances to the Gaping Gill cave system, located in a steep grassy shakehole some south-east of Gaping Gill Main Shaft . Its mainly narrow stream passage descends a number of small shafts to enter the main system as a major inlet of Hensler's Master Cave.
13.
A small draughting opening on Casterton Fell, Cumbria, opened immediately onto a shaft . Passages from the base of the shaft were explored over the succeeding weeks and months by members of the British Speleological Association, including Ease Gill ( the local master cave ) and high-level fossil passages above it were found and followed upstream to a series of complex inlet passages.
