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