From the head of the 33 m pitch (Point D) it is possible, with care, to traverse round to the left, over the 90 ft pitch, and enter a tight rift passage of pipette cross-section at the far corner (survey). This passage continues dead straight and breaks into a wide muddy bedding plane which connects on the left, via a squeeze (Point E), with the final chamber in the Major Series. The floor of the passage drops away as a vadose trench, the shale bed provides ledges on either side and the rift continues in the flat roof until the lip of a pitch is reached.
A short P-bolted SRT descent lands onto a platform of jammed boulders with a pitch on either side. To the left various chockstones make it possible to reach the other side of the pitch, a series of cascades and pools carrying a very small stream. This pitch descends in steps of 1.7 m, 8.8 m, and 20 m to South-East Passage.
Upstream from the platform of jammed boulders, a slippery 3.4 m water chute can be climbed by combined tactics to reach an interesting inlet passage consisting of a washed out shale bed with a winding rift in the roof and a vadose trench in the floor, not in line with each other. Where the trench begins is a widening of the bedding and a pool. Ahead a muddy passage, carrying no stream, becomes tighter and more unpleasant, winds past a couple of squeezes and eventually chokes with mud in very unpromising circumstances. From the pool a rift off to the left turns through two right angles after a 2 m climb, and a small elliptical inlet passage runs almost dead straight for 24 m, past a few small oxbow columns and through a couple of pools to a muddy sump (Sump 2). There was no evidence of previous exploration of this section.
From the platform of jammed boulders, a P-bolted traverse leads to a fine pitch of 30 m down an impressive shaft which lands adjacent to the entrance of New Hensler's Passage. Continuing over this pitch allows one to reach a small dry passage. A squeeze round a large block and a length of crawl leads to a 6 m pitch into a chamber. Here, a 2 m climb up at one side and a rift passage of decreasing height end at a squeeze into a small unstable chamber with a choked outlet near the roof.
In the other direction from the 6 m pitch, a widening rift passage leads shortly to another 6 m pitch into a wide muddy rift (Wildcat or Groundhog Rift). Further down is the skeleton of a cat which gave the rift its name and provided a puzzle as to how it got there. Beyond it, a narrow section leads to a very muddy 3 m high tunnel which passes a blind branch on the left, and pops out 4 m up the back wall of the big pitch shaft. The climb looks easy but isn't.
Most cavers reach this point more easily by descending either the 28 m pitch or the 30 m pitch. Three galleries occur round the shaft where there are shale beds. At the bottom of the pitch, the water enters a low, gravel-floored bedding with a healthy draught blowing out, possibly associated with New Hensler's Crawl.
Past the entrance to Wildcat Rift a mud bank rises and drops again into a parallel aven which rises up to Upper South-East Passage. At the lowest point, under one wall, a tiny passage carrying a tiny stream winds off between mud banks to a tiny sump. Further on up a muddy boulder slope, a hole against the wall drops into New Hensler's Crawl. Straight ahead is a climb up to Far South-East Passage, more easily reached by a glutinous muddy slope and traverse on the right. From here a low muddy passage leads into South-East Rift.