Pen Cerrig-calch the southeastern spur from Crug Hywel (Table Mountain). Pen Cerrig-calch Pen Cerrig-calch is a subsidiary summit of Waun Fach in the Black Mountains in the Brecon Beacons National Park in southern Powys, Wales. Its summit, at a height of 701m (2,300 ft), is marked by a trig point. The peak sits high above the River Usk valley as it narrows above the small town of Crickhowell.The views from here are wide-ranging and extend as far as the Beacons themselves to the west. A ridge runs off to the northwest and the shoulder of Pen Gloch-y-pibwr then turns north to the
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