2572: shaft
La Colina 30T 453823 4796921 (Datum: ETRS89. Accuracy code: G) Altitude 578m
Length 84m Depth 51m
Area position

Updated 8th June; 12th July 2007

An undistinguished hole covered by 3 blocks, one large. The entrance is above passages in Alpine Chough Pot (site 99).
A descent of 12m reaches a ledge and a further, undescended drop of 31m - at least that was the expectation before a return visit with 40m of rope didn't reach the bottom. A second return visit with more rope found the total depth to be 51m - but requiring 60m of rope for the knots, etc. The shaft widens out 30m down to about 5m wide with formations on the overhanging roof. At -45m it is possible swing into a small side chamber and inlet. Straight on is too tight, but to the left (looking from the pitch) you can climb up over or go under formations to a passage that, after an excavated squeeze, reaches a small chamber back in the inlet. At first there seems no way on apart from a too tight crack with a trickle of water, but above is a rift that goes over and past the end point. Some easy digging is needed for about a foot to an easy going, small rift - this was surveyed to a corner using Disto.
Back at the pitch it looks like the inlet passage may go over a pitch (pic 14) to a continuation, but this is not clear. At the base of the pitch under the chamber is a small rift to a further drop of a few meters at most - this needs capping to get in. It seems big enough beyond although it is impossible to see clearly until it is capped!

Reference: anon., 2006d (summer logbook); anon., 2006e (autumn logbook); Corrin Juan, 2007; anon., 2007c (Whit lotgbook); Corrin Juan, 2007a
Entrance pictures : yes
Underground pictures : 1: partial exploration  2: Explorations, Whit 2007
Video :
Detailed Survey : 1:500 pdf
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.)