Adit and ?shaft. Greenly 1919; M J. 1835; OS
Porth yr Aber
aka Porth Helygen
Copper Mine
Jan 1st, 2024 from Cambrian by Buddle-Bot
| North Wales | |
| Penysarn | |
| 53.390149, -4.26994 | |
| SH 4915 9055 | |
| Private Land | |
| 20m | |
| #711 |
Rhosmynach Mine - 1,283m
Ogof Fawr - 1,611m
Ogof Fawr - 1,614m