Black Mountain Pass, Brecon Beacons

About this drive

The A4069 Black Mountain Pass crosses the western Brecon Beacons between Brynamman and Llangadog through some of the highest and most open moorland in Wales. The road climbs steadily from the former industrial town of Brynamman into an upland landscape of bog, heather, and wide sky — a transition that happens quickly enough to feel deliberate. At the summit, the view north across the Usk Valley and south toward the coastal plain illustrates how compressed the Welsh landscape is: farmland, moorland, and sea all visible from a single point. The road is single-track in places and heavily used by motorcycles on dry weekends. The surface holds up well by Welsh mountain road standards. The descent into the Towy Valley is gentler, passing through Llangadog before joining the A40. The Black Mountain ridge itself is accessible on foot from a small car park near the summit, where the walk to Bannau Sir Gaer and Fan Brycheiniog gives some of the best high moorland walking in Wales. The drive pairs well with a loop through the Brecon Beacons taking in Pen y Fan and the Usk Valley.