Blaenavon Industrial Landscape Site Boundary

The focus of the site is the head of the Afon Lwyd river. This includes the major preserved items of Blaenavon Ironworks and Big Pit together with Blaenavon town and the oldest areas of iron and coal extraction between Blaenavon and Pwll-Du.

The site extends over the mountain which defines the Brecon Beacons National Park boundary into the valley of the River Usk. Blorenge Mountain has remains of limestone quarries, primitive railways and Garn-Ddyrys forge on its flanks.

Gilwern Hill had quarries which provided limestone, an essential material in the iron making process.

Between Blorenge Mountain and Gilwern Hill lies Cwm Llanwenarth, a deeply cut valley which exhibits a pattern of smallholdings, farms and fields which predate the Industrial Revolution.

The nominated site falls within two Unitary Council administrative areas:-

Torfaen County Borough council	1804 hectares
Monmouthshire County Council	1486 hectares
Total	3290 hectares