Updated 7th October 2012

A 5m deep hole on the left hand side of the path, covered with railway sleepers. The hole was explored down to the choke (with no possibility of continuing) in February 2010. Marked AD-4.

Reference: anon., 2008e (summer logbook); ADEMCO, 2012
Entrance pictures: ADEMCO, 2012 pp13-14
Underground pictures :
Video :
Detailed Survey : from ADEMCO, 2012
Line Survey :
On area survey :
Survex file :