Slant mine.
Great Mountain
Coal Mine
Worked from 1887 to 1962
Jan 1st, 2024 from NMRS by Buddle-Bot
| South Wales | |
| Tumble | |
| 51.78935, -4.118245 | |
| SN 5400 1220 | |
| Private Land | |
| 85m | |
| #2,561 |
Clos yr Un Colliery - 1,028m- New Dynant - 1,115m
- Blaenhirwaun - 1,139m
- Dynant Fach - 1,509m