Guide to Wales's hills & mountains

Pen Allt-mawr

Pen Allt-mawr - Blaenau Gwent

© Jonathan Billinger and licensed for reuse under this Creative Commons Licence

Pen Allt-mawr is the 2147th highest peak in the British Isles and the 87th tallest in Wales


720.0 m (2362 ft)


102.0 m (335 ft)

Survey method

Abney level


No feature 30m S of trig point


Hill / mountain range

Black Mountains

Nearest town

Nantyglo, Blaenau Gwent

Notes & comments

Ground higher than base of trig point at SO 20691 24334, but ground within 10m of trig point could also be as high