This unique sculpture is not only a geological map of the Forest of Dean in stone, it is also a map of the area’s industrial history. In combining the two, it demonstrates the close relationship between them.
The great industries of quarrying and mining in Dean date back to pre-Roman times. Most of the coal and iron mines on the map are now disused, but several quarries are still in use, providing both building stone and aggregate. The coal seams are located in the Pennant and Trenchard Groups and the iron mines were virtually all located within half a mile of the Crease Limestone, part of the Carboniferous Limestone Series. Quarries are located in limestone areas for aggregate extraction and formerly for agricultural lime, and in sandstone areas for building stone.
The rocks making the map are, with one exception, taken from operational and disused quarries in Dean, with the help and cooperation of quarry managers and landowners, and form an accurate geological map of the area.
Coal mines, iron mines and quarries are represented by numbered discs on the map. The names of the various quarries and mines are listed overleaf.
The grant from Natural England for this unique piece of sculpture was awarded to the Forest of Dean Local History Society in partnership with the Forestry Commission, Gloucestershire Geology Trust, Coleford MCTI Partnership and the Forest of Dean District Council.
Find out more about the Geomap below.