Key facts
Pen Twyn Mawr (658m) is in Wales, in the Black Mountain.
- Region
- Wales
- Mountain range
- Black Mountain
- Prominence
- 17m
- Nearest higher peak
- Pen y Gadair Fawr · 800m, 2.4km
- Nearest hut
- Grwyne Fawr · 4.8km
- Parking
- 2km
- Nearest village
- Llanthony · 4.6km