The passage drops down a couple of climbs and a further two short pitches before arriving at the 9 metres (30 ft) deep Storm Pot, where the stream reappears in the roof.

[4] Simpson Pot is a karst cave formed within the Great Scar Limestone Group of the Visean Stage of the Carboniferous Period, laid down about 335 Ma.

The upper passages follow bedding planes dipping gently towards the north-east until an area of joints are intercepted at Five Steps Pot, where the cave is able to descend rapidly down a series of shafts.

On the first trip Bob Leakey, having left his companion near the entrance, free-climbed Five Steps Pot and traversed across The Pit before being stopped by a 6 metres (20 ft) pitch.

Leakey visited the site on a solo trip, and found a crack above water emitting a strong draught.

[4] In 1993 Michael Jones was drowned on a through trip between Simpson Pot and Valley Entrance, when the waters rose and he was swept into the Kingsdale Master Cave sump.