Pen Allt-mawr

About Pen Allt-mawr

Rising as a prominent, flat-topped ridge in the western Black Mountains, this Hewitt offers a grandstand view over the Usk Valley. Its distinctive escarpment provides airy walking along a narrow sandstone edge, often visited alongside Pen Cerrig-calch. Expect firm turf, dramatic drops, and a summit that feels like a true mountain redoubt.

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Did You Know?

• •The name translates from Welsh as "top of the great wooded slope," referring to the steep, historically forested flanks that rise sharply from the valley floor near Crickhowell.
• •The summit is a key waypoint on a classic 12-mile horseshoe walk, traversing the airy limestone and sandstone edges that define the western arm of the Black Mountains.
• •From the summit cairn, the view to the southeast is dominated by the unmistakable, isolated cone of the Sugar Loaf, while the central Brecon Beacons peaks of Pen y Fan and Corn Du are visible on the western horizon.
• •Geologically, the hill is composed of Old Red Sandstone, which creates the sharp, tiered escarpments and plateau-like tops characteristic of this region of Wales.
• •While some records might suggest Minehead as a nearby town, you would actually have to cross the Bristol Channel to reach it; local walkers generally start their ascent from the Llanbedr valley instead.