Surveys and Rigging Guides
? MISSING (grade 5)Underground Description
Horizontal entrance at base of small cliff at head of dry valley, leads over peaty infill to a pitch head. Cross first hole and descend second, 30m to large chamber. To left is unsurveyed inlet ending too small, while to right is head of very steeply descending phreatic-tube-like pitch of 15m vertically (20m+ of rope). This is a little thrutchy to start, but opens out, and ends in a short climb.
Head of Second pitch 
A further 15m pitch follows, hanging clear of a wall made up mainly of boulders. A way on across the head of the final pitch appears too tight. Hole in floor is last pitch, of 33m, which has a boulder 10m high in it, and you can descend either side. Draught is lost into a small passage which you could reach by bolting, but it seems a little pointless.
There is a 1987 extension, but I can't make much sense of the logbook description.