Old Bow and Old Ham Mines

Old Bow And Old Ham Mines (grid reference SO579088) is a 40.3-hectare (100-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1998. == Location and habitat == The mines comprise one of a series of Sites of Special Scientific Interest within the Forest of Dean and Wye Valley (Gloucestershire and Monmouthshire).

Source: Wikipedia — Old Bow and Old Ham Mines (CC BY-SA 4.0)