Updated 5th November 2011; 18th February 2012; 4th December 2014; 30th November 2016; 8th January 2020

This cave is about 35m long, nearly all hands-and-knees crawling, ending in a draughting boulder choke with faint daylight seen. This lies on the south side of the ridge and, if cleared, would provide the first Matienzo-Arredondo through trip. More importantly, the site contained Bronze Age pottery, some of which was apparently in situ.

A permit for archaeological work was received and pottery was removed for further study in the autumn, 2011. The pot was found to have been buried upsidedown. The results of an extensive study of the pottery have been published. This comprehensive article, with an abstract in English, details a petrographic description and the results of a thermoluminescence, X-ray diffraction and analysis of organic residues.
Reference Smith P et al, 2015 has a summary of the archaeological work carried out within 2004 - 2016 has a table of thermoluminesence dates.

The entrance to site 3255 lies 6m to the northeast.

Reference: anon., 2011a (January, February logbook); anon., 2011e (autumn logbook); anon., 2012c (Whit logbook); Smith Peter et al, 2014; Smith P et al, 2015; Smith Peter y Cubas Morera Miriam, 2016
Entrance picture : yes
Underground picture(s): yes
Video: yes (updated)
Detailed Survey : yes, with site 3255
Line Survey :
On area survey :
Survex file : stand alone (Amended magnetic declination December 2013 to align with Eur79 grid and coordinates altered to fit ETRS89 datum, April 2014.)
with site 3255 (Amended magnetic declination December 2013 to align with Eur79 grid and coordinates altered to fit ETRS89 datum, April 2014.)