Cefn yr Ystrad

About 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.

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Did You Know?

• •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.