Marked as ‘cave’ on OS 1888-1913 1:10,560 map.
Iron or copper mine? 2 adit, upper one short. Lower may have been recently opened? see link urls
Near footpath in woods.
Sion y Sian Mine
aka Braic Melyn South Quarry
Copper and Iron Mine
Jun 11th, 2025 from Geotopoi by BertyBasset
| North Wales | |
| Bethesda | |
| 53.1677666, -4.0495749 | |
| SH 6309 6537 | |
| Open Access | |
| #26,844 |
Braichmelyn - 455m
Dolawen - 544m
Ceunant - 790m- Cefn yr Orsedd - 833m
- Penrhyn - 1,145m
Tan y Garth - 1,544m- Cwm Ceunant - 1,636m
- Cwm Ceunant - 1,640m
- Pant Dreiniog - 1,939m