Pen Twyn Mawr
Pen Twyn Mawr is the 2937th highest peak in the British Isles and the 154th tallest in Wales
Elevation
658.0 m (2159 ft)
Prominence
17.0 m (56 ft)
Survey method
Abney level
Features
No feature 15m NE of cairn
Category
Hill / mountain range
Nearest town
Hay-on-Wye/Y Gelli Gandryll, Powys
OS map sheets
OS25: 013N (Brecon Beacons National Park)OS50: 161 (Abergavenny & The Black Mountains/Y Mynyddoedd Duon)