1061: Half Hour Hole
La Secada

Entrance is on the uphill side of the road, some 100m past the 21km stone to Fuente las Varas. A dig above Cueva de Bollón (098) which has some draught and stones rattling down.

Reference: anon., 1995c (logbook)
Entrance picture :
Underground picture(s):
Detailed Survey :
Line Survey :
On area survey :
Survex file :