2693: shaft
Caburrao 30T 457102 4795785 (Datum: ETRS89. Accuracy code: G) Altitude 220m
Length 114m Depth 23m
Area position

Updated 8th May 2009; 20th June 2021

   The cave resides in a doline on the down valley side of the track, the same doline that contains site 0999. (The original GPS grid reference was not correct; the correct grid reference above has been supplied by José Luis Sierra Calvo).

   The entrance is a very muddy 11m climb which is best laddered. A small chamber chokes with calcite and the way on is a muddy hole where the ladder ends. This is a slide down a muddy tube into a 3.5m wide passage. Ahead, on the left, a calcited ramp rises to a choke. The main passage continues down a 2m drop and the sandy-floored passage continues until it lowers and ends in a small chamber 1m high by 0.5m wide.
   Eleven metres back from the end on the right is a body-sized hole leading to a tube and a squeeze under calcite at the bottom into a chamber. The roof here is covered in helictites, "antlers" and other fine formations.
   A short climb around a block on the right soon chokes. A hole in the floor leads to a steep rift and at the base is a muddy dig where an echo could initially be heard until mud became too liquid. This was excavated on one occasion over Easter 2009 and it is probably worth a further dig in a spell of very dry weather.

Reference: anon., 2007b (Easter logbook); Corrin Juan, 2007a; anon., 2009a (Easter logbook); anon., 2021b (Spring logbook)
Entrance pictures : 2021
Underground pictures : 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.)