Small level.
Llyn yr Onen Colliery
Coal Mine
Worked from 1992 to 1998
Jan 1st, 2024 from NMRS by Buddle-Bot
| South Wales | |
| Ammanford | |
| 51.780384, -3.961253 | |
| SN 6480 1090 | |
| Private Land | |
| 170m | |
| #2,665 |
Bwlch Colliery - 412m- Lletherlan Colliery - 606m
- Glyncywarch Colliery - 900m
- Dan yr Alt Colliery - 1,137m
- Betws New Mine - 1,170m
- Mount - 1,252m
- Royal Oak Colliery - 1,261m
- Nantyffin Colliery - 1,497m
- Bodyst Uchaf Colliery - 1,564m
- Ammanford - 1,731m
- Cathan Colliery - 1,996m