| South Wales | |
| Clydach | |
| 51.8056717, -3.1424019 | |
| SO 2133 1251 | |
| Private Land | |
| 251m | |
| #28,476 |
Gretton's Adit - 722m
Ty yn y Coed Quarry - 898m- Llanelly Quarry - 1,000m
- Rydw Farm Level - 1,130m
- Rhasfawr Colliery - 1,140m
- Llammarch Colliery - 1,160m
- Graig Colliery - 1,210m
- Waun Afon Colliery - 1,239m
- Penydarren Quarry - 1,377m
Waun Afon Slope - 1,762m- Waun Nantyglo Colliery - 1,829m
- Ellwood Colliery - 1,830m