Pen Allt-mawr map

Pen Allt-mawr

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720 m

Elevation

Elevation is the altitude of a place
above sea level.

105 m

Prominence

Peak’s prominence is the least
vertical to be covered to get from the
summit to any other higher terrain.

Proportional Prominence 399 m

About

Pen Allt-mawr is a 719 metres (2,359 ft) high subsidiary summit of Waun Fach and the third highest peak in the Black Mountains in south-eastern Wales. A very recognisable and prominent peak of the Black Mountains, it lies near the end of the more westerly of Waun Fach's two broad southern ridges. Its top Pen Twyn Glas is to the north, while its close neighbour Pen Cerrig-calch is to the south. A prominent spur 1 km to the SSW of the summit is known as Pen Gloch-y-pibwr. The stepped Bryniog ridge curves southward from this point.

Its summit is stony and has damaged Bronze Age cairns and a large shelter cairn together with a trig point. Further Bronze Age cairns are found along the western edge of the plateau to the south.

There's a trail leading to the summit.

By elevation Pen Allt-mawr is

# 93 out of 3092 in the Wales Mountains
# 27 out of 930 in Powys
# 20 out of 172 in Brecon Beacons National Park
# 93 out of 3083 in Wales

By prominence Pen Allt-mawr is

# 93 out of 930 in Powys
# 26 out of 172 in Brecon Beacons National Park