1350: Hoyos, Sumidero de los (2312 (French: SCD))
Arredondo 30T 450183 4792590 (Datum: ETRS89. Accuracy code: G) Altitude 452m
Length 85m Depth 6m
Area position

Updated April 20th 1999; 13th October 2004; 11th February 2016; 23rd September 2018

Site explored and surveyed by the Catalans in October 1998.
The site lies at the base of a closed depression in woods. There are three entrances - two low in the base of the cliff and one a pitch entrance a few metres up. Marked VT with a square and diagonal line.

Reference: material in file; anon., 1999a (Easter logbook); anon., 2004d (summer logbook); Simonnot G, 2016; Simonnot G, 2018
Entrance picture: distant   close up
Underground picture(s):
Detailed survey:
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.)