A 6m deep hole by the road side explored by ADEMCO. Marked AD-1.
[The given grid ref of ED50 0454940 4798328 puts the entrance away from the road.]
Reference: ADEMCO, 2012 pp9-10
Entrance picture : ADEMCO, 2012 p9
Underground picture :
Video :
Detailed Survey : from ADEMCO, 2012
Line Survey :
On area survey :
Survex file :