Pen Cerrig-calch 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 secondary top of Pen Allt-mawr whose peak at
Pen Ty-Nant Pen Ty-Nant Pen Ty-Nant () is a hill within the Snowdonia National Park in Gwynedd, North Wales. Pen Ty-Nant is a member of the Arenig range, just from the small hamlet of Rhyd-uchaf and from Bala. Its parent peak Arenig Fawr is approximately to the west. It is a continuation of a small ridge that begins just to the northwest of Bala and ends at Moel y Garnedd on moorland known as the Gwastadros. On a clear day Pen yr Ole Wen, a member of the Carneddau can be seen above Llyn Celyn, to the northwest. Carnedd y Filiast, Moel