OAN field survey, located by GPS to an accuracy of +/- 1m. Area of disused mine shafts located to the east of the steep sided valley into Worlds End. The site consists of three shaft depressions of up to 20m diameter and 4.5m deep. These shafts are located to the north east of a large shaft with a large sub-circular earthfast spoilheap, approximately 30m in diameter and 2.5m high.2003/02/11/OAN/NW