2415: shaft
Fresnedo 30T 452558 4801522 (Datum: ETRS89. Accuracy code: G) Altitude 139m
Length 76m Depth 29m
Area position

Updated 9th October 2007; 18th November 2009; 22nd, 30th October 2010; 14th May, 1st June 2011; 27th September 2012

A dig next to the road that emits a very good draught on a hot day. The site lies close to the supposed drainage route from Cueva de Huerto Rey to the Nacimiento de Campiazo. The cave was excavated in the autumn 2009 to a crawl with a loose roof. Further digging occurred on a couple of occasions over Easter and the summer 2010. In a horizontal passage, the draught coming up the face of a rock under the digger's body suggested the way on should be down. Awkward digging was commenced and a gap under the edge-capped boulder was opened up. A boulder slope down into a cavity big enough for a person was observed that reinforced the view that the way on is down.

The breakthrough came at Easter 2011 when the cave was explored and surveyed.

The entrance pitch of 16m is best rigged with ladder for the first 8m to large alcove. Care is needed here on shoring. The next 8m drops to a chamber, 5m across with two holes in the floor which connect under boulders. The way on is a climb up and crawl under a large fallen block then left into a crawl and 2m climb down into the 2nd chamber.
Opposite the climb down, on the far wall, is a scramble up of 3m to walking passage into a 3rd chamber where all routes seem to choke.
At the base of the boulder slope in the 2nd chamber is an 11m pitch into a lower chamber which chokes at the lowest point. Two small rifts part way up one wall both choke; the left hand one may dig. Across the top of the 11m pitch is a small inlet to a 4m pitch (which looks blocked). The passage continues upstream with a small stream in floor but getting tight. This requires some work removing sharp spikes on both walls.

In 2012, the inlet at the top of the third pitch was pushed for about 15m to where it becomes too low at a pool. Also, at the top of the lowest chamber, some blocks were moved giving a through route to the third chamber above, meaning that the last pitch can be avoided. Halfway up, a hole looks through onto a short shaft which needs capping (or a thinny). One of the pitch tops is /was dangerous - see video.

Reference: anon., 2006b (Easter logbook); anon., 2007d (summer logbook); Corrin Juan, 2007a; anon., 2009d (autumn logbook); anon., 2010b (Easter logbook); 2011b (Easter logbook); anon., 2012d (summer logbook)
Entrance pictures : yes (2006, 2007, 2009 and 2011)
Underground picture(s): yes, 2012
Video : dangerous pitch head (YouTube)
Detailed Survey : 1:250
Line Survey :
On area survey :
Survex file : yes (Amended magnetic declination December 2013 to align with Eur79 grid and coordinates altered to fit ETRS89 datum, April 2014.)