Pen-y-crug Pen-y-crug Pen-y-crug is a hill in the Brecon Beacons National Park in the county of Powys, south Wales. It is commonly referred to locally as simply 'The Crug' ("pronounced cree-g"). The Welsh name signifies 'top of the mound'. It slopes are moderately gently on three sides; only to the west do they steepen somewhat. Its flat trig point adorned summit at 331m overlooks the valley of the River Usk to the south. To the southeast are panoramic views over Brecon whilst eastwards are the Black Mountains and south the Brecon Beacons. The hill is formed from sandstones and mudstones of
Pen-y-cae, Wrexham the Primitive Methodist chapel in Copperas. Coal was extracted from pits at Plas Bennion, Wynn Hall, Afon Eitha, Cristionydd, Groes and Plas Isaf; zinc was worked at Copperas. The area descending towards Acrefair was known as "The Delph", it was served by extensions of the Ruabon Brook Tramway but these were mostly defunct by the mid-20th century. Most inhabitants find employment outside the village in Wrexham with only a few local shops or public buildings providing jobs. "Dee Valley Water" operates two reservoirs in Pen-y-cae: "Pen-y-cae Upper" and "Pen-y-cae Lower". Wright & Son, ran a bus service from Pen-y-cae to