Silurian rocks of Ludlow age. No evidence of workings remains today.
The Dyffryn Aled Mining Company operated in the area along the valley of Afon Gallen.
Hendre Ddu
Lead Mine
Worked from 1883 to 1884
Jan 1st, 2024 from Cambrian by Buddle-Bot
Feb 17th, 2025 by BertyBasset
| North Wales | |
| Llangernyw | |
| 53.1831284, -3.6826329 | |
| SH 8766 6644 | |
| Private Land | |
| 145m | |
| #468 |
Rhwng y Ddwyffordd Quarry - 1,381m