3163: shafts
Secadura 30T 455895 4798613 (Datum: ETRS89. Accuracy code: G) Altitude 263m
Area position

A large shakehole with rock outcrops around the side. In the east side of this feature is an open shaft with a good outward draught. It is possible to see a clay floor with possible passage running off both north and south. The shaft has been descended and further information has been requested.
Within the same depression are another couple of short choked shafts 3m to the south of the open hole. These are not worth site numbers in their own right.

Reference: anon., 2009a (Easter logbook); anon., 2012e (autumn logbook)
Entrance pictures: yes
Underground pictures :
Video :
Detailed Survey :
Line Survey :
On area survey :
Survex file :