Black Mountain

About Black Mountain

Rising above the book-town of Hay-on-Wye, this expansive, peat-covered ridge marks the border between Wales and England. As the highest point in Herefordshire, it offers a steady, long-distance walk along the Offa’s Dyke Path, with wide-reaching views over the Vale of Ewyas and the neighbouring ridge of Lord Hereford’s Knob.

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Did You Know?

• •The name Black Mountain refers to this specific ridge, while the wider range is the Black Mountains. The summit itself is often called Twyn y Llech, Welsh for 'hillock of the slab'. The 'black' designation likely comes from the dark, brooding appearance of the heather and peat against the skyline when viewed from the lowlands.
• •This summit serves as the highest point in the English county of Herefordshire. While the border with Powys runs directly through the ridge, the highest ground provides a rare English 700-metre peak situated outside of the northern moorlands and the Lake District.
• •The ridge is a key section of the Offa’s Dyke Path, a National Trail following the 8th-century earthwork. It offers a remarkably level high-altitude walk, looking down into the deep, glacial trench of the Vale of Ewyas where the ruins of Llanthony Priory sit.
• •From the plateau, the view south-west picks out the distinctive flat-topped silhouettes of Pen y Fan and Corn Du. To the north-west, the vista opens up towards the Radnorshire Hills and the distant, rugged profile of Cadair Idris on a clear day.
• •Navigating the summit plateau in mist requires a keen eye; the top is so broad and flat that the highest point is barely indistinguishable from the surrounding bog, marked only by a modest cairn that seems almost apologetic for its own lack of drama.