Forest of Dean Coalfield
The Forest of Dean Coalfield, underlying the Forest of Dean, in west Gloucestershire, is one of the smaller coalfields in the British Isles, although intensive mining during the 19th and 20th centuries has had enormous influence on the landscape, history, culture, and economy of the area. For hundreds of years, mining in the Forest of Dean Coalfield has been regulated through a system of freemining, in which individuals who qualify are granted leases to mine specified areas, known as gales.