Cefn yr Ystrad

While technically part of the Brecon Beacons, the terrain here feels more akin to the limestone uplands of the Peak District. The broad summit plateau is a labyrinth of shake holes and gritstone boulders, requiring careful navigation when the cloud drops, but rewarding walkers with a unique perspective on the Talybont Valley.

• •In Welsh, the name translates as 'The Ridge of the Valley.' Cefn refers to a long ridge or 'back,' while ystrad describes the flat land of the valley floor, specifically the Usk Valley that lies to the north.
• •The summit plateau is a prime example of karst topography; the underlying limestone has dissolved over millennia to create hundreds of 'shake holes'—steep-sided turf depressions that can make walking in a straight line surprisingly difficult.
• •A significant Bronze Age round cairn known as Carn y Bugail (The Shepherd’s Cairn) sits on the northern end of the ridge, which has served as a prominent landmark and burial site for thousands of years.
• •From the 617-metre summit, the western view is dominated by the steep, sandstone profiles of Fan y Bîg, Cribyn, and Pen y Fan, while to the east, the distinctive silhouette of the Sugar Loaf is visible across the Usk Valley.
• •The western slopes are scarred by the Gwar y Ystrad quarries, which once supplied limestone via the historic Brinore Tramroad to the massive ironworks at Dowlais during the Industrial Revolution.
• •Though some databases list the Somerset town of Minehead as the 'nearest' settlement, reaching it would require a very long swim across the Bristol Channel; the industrial town of Merthyr Tydfil is a much more practical starting point.