Updated 23rd May 2015; 11th February 2016; 24th September 2018; 17th November 2022; 26th September 2023

According to Simonnot G, 2016, the site position is ETRS89 0451977 4791604.

An important, all-year-round, impenetrable spring. The water joins the Río Asón after 200m. Catalogued for 'completeness'.

This was a site for OBA detectors at Easter 2015 when downstream Cueva Vallina was traced to Cueva Comellante. The site lies on private land and the owner is not very happy if permission to cross to the resurgence is not sought.

A positive test frpom site 1757 / 3270 was recorded on 3/6/2023. (See Hydrology page.)

Reference: anon., 2009b (Whit logbook); anon., 2015b (Easter logbook); Simonnot G, 2016; Simonnot G, 2018; Simonnot G, 2022; anon., 2023c (summer logbook)
Entrance picture: yes
Underground pictures :
Video :
Detailed Survey :
Line Survey :
On area survey :
Survex file :