Updated 7th October 2006; 19th September, 21st October 2013; 9th May 2018

   A resurgence cave that flows in wet weather. The water then sinks and resurges down a small, shallow valley and appears to finally sink 30m away from Cueva de los Tablons (site 242). The sink shown in the photo has yet to be positively identified or investigated on the surface(?)
   The cave was explored in the summer of 2006 and was mainly crawling with some places where it was possible to stand up. The cave was surveyed to 41m length in 2013 with the following description.

   A horrible, stagnant entrance with many flies, spiders, tiny leeches, etc in the first crawls. The end was found to be too small to push a helment through. It draughts well but would need chemical persuasion to continue. It wasn't 70m or big enough to stand as suggested previously. A nice toad was found in the now-named Toad Hall.

   In April 2018, it was noted that the cave lies on a 1m thick bed of sandstone and that this feature may be visible about 100m down in Torca del Dron (site 4669).

Reference: anon., 2005b (Easter & summer); anon., 2005d (Whit logbook); anon., 2006d (summer 2006); Corrin Juan, 2007; anon., 2013d (summer logbook); anon., 2018b (Easter logbook)
Entrance pictures: yes
Underground picture(s): pictures taken during the 2006 exploration
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.)