Probably a trial adit related to either slate or copper from the early 1900s
Flooded and entrance filled with waste by farmer.
Unknown
CRoW land. Easy access from Rhiwbach Tramway
| North Wales | |
| Penmachno | |
| 52.9988823, -3.8905649 | |
| SH 7322 4629 | |
| Private Land | |
| 510m | |
| #26,847 |
Blaen y Cwm - 291m
Offeren - 300m- Nelw Williams Quarry - 362m
- Frudd - 480m
- Ffridd - 487m
- Cwt y Bugail - 540m
- Bwlch y Slaters - 790m
- Rhiwbach - 852m
- Graig Ddu - 1,208m
- South Pole - 1,255m
- Clogwyn Garw - 1,489m
- Cwm Teigl - 1,753m
- Rhiwbach Drainage Adit - 1,756m
- Chwarel Llew Twrog - 1,781m
- Maenofferen - 1,842m
- Lefel Dwr Oer - 1,888m