Trial adit.
Publications (1)
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
Ystumiau
Slate Quarry
Jan 1st, 2024 from GWSI by Buddle-Bot
| North Wales | |
| Dolwyddelan | |
| 53.057339, -3.8949151 | |
| SH 7310 5280 | |
| Private Land | |
| 200m | |
| #1,332 |
Chwarel Sion Jones - 446m- Llan - 550m
- Adwy'r Dwr - 705m
- Pompren - 1,028m
- Chwarel Ddu - 1,160m
- Prince Llewelyn - 1,229m
- Ty'n y Bryn - 1,301m
- Penllyn - 1,434m
- Ffridd Bryn Moel - 1,448m
Penrhiw - 1,520m- Buarthau - 1,695m
- Chwarel Fedwr - 1,764m