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The pot is located within the massive rampart of boulders and scaffolding 91m upstream of UPPER EASE GILL KIRK.
Drop through boulders into a clean passage and drainpipe crawl into a roomy tube choked at both ends. The outlet, through a pool, leads to a fine 4.5m climb into a second chamber with the exit around an undercut block into a fine passage under two avens with short inlet crawls. Down through pools to a 21m pitch into a high but narrow rift. Stream flows over a shingle floor into deep pools with diminishing fissure airspace. A high but narrow rift ends at a sump in deep water. This is the lowest point in the cave and the sump is not far above the level of Leck Beck Head: it dries up in drought conditions to reveal a very tight rift.
Upstream leads to a succession of dry climbs to rejoin the water which emerges from an undived sumped canal.
A traverse at the top of the 21m pitch enters a roof passage to a 7m pitch. Above this on the right is a small trench to an alternative 24m pitch into the downstream rift and a high level passage which soon chokes. A climb down below the 7m pitch, which is difficult to reverse, lands in a blind muddy chamber. Above the climb a series of crawls unite and suddenly emerge in SURPRISE HALL, a flat roofed cavern some 24m by 18m and 9m high. At the far side of the hall the floor shelves into a massive trench with a choked pool terminating the right branch. A muddy passage in the roof of SURPRISE HALL has floor slots which communicate with the right branch below, but this ends in two choked inlets.
The left branch of the trench continues above a great slab as the impressive PENNINE WAY to a side passage up on the left and a 4m pitch into a gravel floored chamber. The PENNINE WAY lowers to a boulder choke with a low bedding plane off to the right, this leads to a climb down a chimney into a tiny chamber.
There is a sump at the southern end of the Pennine Way . This has been dived and found to end at a choke of glutinous mud after only 2m.
A small exit at floor level is the MUD TUBE CRAWL towards the enticing sound of running water. Straight ahead a mud slope plunges into a static sump with a greasy mud choked inlet. and has been dived for 4m in crystal clear water to -3m depth. The only way on is an impossibly tight undercut in the right wall. It seems likely that this connects with the nearby Far Stream Passage Sump: muddy water presumed to be from Far Stream Passage was seen in the sump before the way ahead closed down.
The REVERSE STREAMWAY or FAR STREAM PASSAGE is gained by turning right. The water falls into an active sump. This active sump at the downstream end of Far Stream Passage is undived. It probably connects with the nearby static sump at the north end of the Pennine Way: discoloured water (presumed to be the water flowing into Far Stream Passage Sump) has been seen at the end ofthe static sump.
Upstream soon enlarges to an easy walking size passage. Above the first cascades is a side passage on the left which is choked by mud and ancient calcite after 9m. A wide pool marks the start of the second set of cascades which lead to a short crawl into the large MYSTERY PASSAGE, this leads to a flat out crawl just before a high chamber choked by calcite and boulders. The only way forward is a meandering canyon to a junction. To the left at roof level is a passage which eventually splits and becomes tight. Right at the junction is a boulder choke which has been forced into a walking size passage to another junction. To the right here the way finally degenerates to a choke fill, whilst left here, downstream, leads to a high chamber, and an upper route connecting back to the right branch.