Black Mountains, United Kingdom

The Black Mountains (Welsh: Y Mynydd Du or sometimes Y Mynyddoedd Duon) are a group of hills on the England–Wales border. The Welsh part is larger and located in south-east Powys and north-west Monmouthshire, and the smaller English part is in western Herefordshire. The range may be roughly defined as those hills contained within a triangle defined by the towns of Abergavenny in the southeast, Hay-on-Wye in the north and the village of Llangors in the west. Other gateway towns to the Black Mountains include Talgarth and Crickhowell.

The Welsh part of the Black Mountains is the easternmost of the four ranges of hills that comprise the Brecon Beacons National Park; they should not be confused with the westernmost, the similarly-named Black Mountain. The range of hills is well known to walkers and ramblers for the ease of access and views from the many ridge trails, such as that on the Black Hill in Herefordshire, at the eastern edge of the massif. Gospel Pass in the range is the highest public road in Wales, and the Black Mountain is the highest point in southern England.