Updated 5th October 2006; 21st September 2022

A large depression to the left of the road has a small sinking stream at its base. This appears to be a soggy mess which was found strongly draughting in 2006. The depression was also seen to flood quickly after torrential rain. There are some badly choked openings on the limestone cliff.

One open hole is reached by a small climb up. A small resurgence was entered for 10m and was pushed for another 30m in 2006 to a block stopping progress.

The large depression to the right of the road has also been investigated. The stream sink is choked with rubbish-filled plastic bags.

Cavers with a family group were met with some antagonism when they went to investigate a nearby draughting slot in August 2022. They were told that there were no caves in the area and they should return to Matienzo.

Reference: anon., 1996b (logbook); anon., 2006d (summer logbook); Corrin Juan, 2007; anon., 2022c (summer logbook)
Entrance picture : yes
Underground picture(s): yes
Detailed Survey : pdf file 1:500
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.)