The Black Mountains (Welsh: Y Mynyddoedd Duon) are a group of hills spread across parts of Powys and Monmouthshire in southeast Wales, and extending across the national border into Herefordshire, England. They are the easternmost of the four ranges of hills that comprise the Brecon Beacons National Park, and are frequently confused with the westernmost, which is known as the Black Mountain. To confuse matters further, there is a peak in the Black Mountains called Black Mountain.
Route - Start at the Castle in Pengenffordd, headed up to the Cairn at the top of Rhiw Trumau, headed over Mynydd Llysiau and Pen Twyn Glas before descending via Tal Trwynau. Picked up foot/bridle path back to the cairn at top of Rhiw Trumau then retraced route back to the castle.
