Updated 28th April 2012; 2nd November 2015; 1st July 2018

The Church Entrance to Cueva de la Hoyuca (site 107), so called as it can be easily accessed down the field to the south of Riaño church. A climb down just inside the entrance meets a crawl that emerges in Quadraphenia. In the 1990's, one section of passage was inundated with cow shit which, by October 2015, had completely disappeared.

Reference: anon., 2008c (Easter logbook); anon., 2015d (autumn logbook)
Entrance pictures: yes
Underground pictures : yes
Video :
Detailed Survey : See site 107
Line Survey :
On area survey :
Survex file :
Passage direction rose diagram: Four Valleys System