2872: shaft (Hoyuca entrance)
Riaño 30T 451764 4799771 (Datum: ETRS89. Accuracy code: G) Altitude 175m
Depth 10m
Area position

Updated 1st July 2018

This the shaft entrance to Cueva de la Hoyuca, previously seen only from the inside of the cave. The Hoyuca survey / this location may need adjusting to allow for the depth of the shaft (c10-15m).

Reference: anon., 2008c (Easter logbook)
Entrance pictures:
Underground picture :
Video :
Detailed Survey :
Line Survey :
On area survey :
Survex file :
Passage direction rose diagram: Four Valleys System