Updated 7th October 2006; 22nd September 2023

[A previous grid reference was 30T 451515 4797717 Altitude 237m]
An excavated rift entrance lies in the same tree-lined depression as site 2109.
A 2m climb leads to a small, sloping passage down to the left, ending at a 2m vertical drop into a chamber. A rope or ladder is most useful for the return. A bouldery hole in the floor leads to a continuation of the chamber. There is a continuing dig at the top of the calcite slope in the first chamber. The site was surveyed during 2006 but has yet to be drawn up.
This site, along with nearby site 2101 lie over the end of the passage heading west in Cueva Bollón.

Small extensions were made in August 2023. Uphill from the chamber was pushed to an upper stal chamber with all ways blocked and with no draught. Downhill was pushed through 2 constrictions to a bouldery rift on the right and a excavted route on the left to a uphill rift which closed down after 2 to 3 metres. At the end of the rift there is a short, choked descending passage. The extensions were not surveyed but the approximate length has been included in the length above. There are no more prospects.

Reference: anon., 2004d (summer logbook); anon., 2006d (summer 2006); Corrin Juan, 2007; anon., 2023c (summer logbook)
Entrance pictures: yes
Underground picture(s): taken during the survey, 2006 : August 2023
Video:[ 2004: chamber - 1st exploration   formations   climb out   Pete Smith on the climb and crawl up ] : August 2023
Detailed Survey : sketch from August 2023
Line survey:
On area survey:
Survex file: 2006 (Amended magnetic declination December 2013 to align with Eur79 grid and coordinates altered to fit ETRS89 datum, April 2014.)