Updated 3rd November 2002; 21st October 2003; 27th June 2004

One of the interesting holes along the base of the vegetated slope in Cobadal. A drop down into water with 80m of passage up to 5m wide that needs a description.
The draughting end appears to come close to draughting passage in the Sumidero de Cobadal system (site 1930).

Reference: anon., 2002a (Easter logbook); anon., 2002b (summer logbook); Corrin Juan, 2003b; anon., 2003c (summer logbook)
Entrance picture: yes
Underground picture(s):
Detailed survey: 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.)