Bwlch

The village is about 1.1 miles (1.8 km) north of the River Usk and about 100 metres above the floor of the Usk Valley at around 200 metres (660 ft) above sea level. The geographical feature from which it derives its name separates the rolling moorland of Cefn Moel and Mynydd Llangorse in the northeast from Buckland Hill to the southwest. Various parts of the village command panoramic views across the Rhiangoll valley to the south-western flanks of the Black Mountains, west to the Brecon Beacons and south to Mynydd Llangynidr and Mynydd Llangatwg. About 2 miles (3 km) to the northwest is the hill of Allt yr Esgair (commonly referred to locally as 'The Allt') whilst 3 miles (5 km) to the southwest is Tor y Foel. Llangorse Lake and the village of Llangors are 3 miles (5 km) to the north, Talybont-on-Usk is around 2 miles (3 km) to the west. The nearest town is Crickhowell, some 5 miles (8 km) to the east down the Usk Valley.^[2]

The remains of a defensive enclosure on the slopes of Cefn Moel to the north of the village date from prehistoric times.^[3] There is also a standing stone of unknown origin and purpose set alone in a field within the hairpin of the A40 road.^[4] A further standing stone of similarly unknown age is found at Llygad Wy on the slopes dropping down eastwards below the A40.^[5] Rising from the Roman auxiliary fort^[6] at Pen-y-gaer, east of the village, the Romans constructed a road between Abergavenny and Brecon which passed through the col before crossing the slopes of Allt yr Esgair. The pass was formerly known as Bwlch'r Allwys^[7] and was once guarded by Blaenllynfi Castle, a Norman castle, now a ruin. Three miles to the east are Tretower Castle and Tretower Court, now in the care of Cadw. The Calvinistic Methodist and English Presbyterian chapel of Penuel was first built in 1817, though the modern building dates from 1874.^[8]