Tiny workings.
Publications (1)
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
Donnen Las
Slate Quarry
Jan 1st, 2024 from GWSI by Buddle-Bot
 | |
| North Wales | |
| Cefn Du | |
| 53.115126, -4.1623592 | |
| SH 5537 5974 | |
| Private Land | |
| 350m | |
| #1,244 | |
Brynmawr - 298m- Chwarel Fawr - 316m
- Cefn Ddu - 677m
- Bwlch y Groes - 900m
- Twll Goch - 906m
- Cook & Ddol - 1,022m
- Caerbanciau - 1,032m
- Moel Eilio - 1,048m
- Glynrhonwy Upper - 1,238m
- Cambrian - 1,348m
- Glynrhonwy Lower - 1,504m
- Treflan - 1,983m