| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Ystrad Mine (Silurian Mine), Betws Garmon, Gwynedd, Wales, UK | 53° 5' 36" N | 4° 10' 50" W | 6.4km (4.0 miles) | |
| Tyddynbach Mine, Betws Garmon, Gwynedd, Wales, UK | 53° 5' 13" N | 4° 11' 5" W | 6.4km (4.0 miles) | |
| Carreg Fawr Mine, Betws Garmon, Gwynedd, Wales, UK | 53° 5' 49" N | 4° 10' 34" W | 6.5km (4.0 miles) | |
| Cook and Ddol Slate Quarries, Llanberis, Gwynedd, Wales, UK | 53° 7' 27" N | 4° 9' 12" W | 7.7km (4.8 miles) | |
| Glyn-Rhonwy Slate Quarry, Llanberis, Gwynedd, Wales, UK | 53° 7' 28" N | 4° 8' 47" W | 8.2km (5.1 miles) | |
| Benallt Mine, Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK | 53° 3' 29" N | 4° 11' 4" W | 8.5km (5.3 miles) | |
| Simdde Dylluan Mine (Talysarn Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK | 53° 3' 24" N | 4° 10' 27" W | 9.1km (5.7 miles) | |
| Drws-y-Coed Mine (Drwy-y-Coed Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK | 53° 3' 30" N | 4° 10' 15" W | 9.1km (5.7 miles) | |
| Pontlyfni meteorite, Clynnog, Gwynedd, Wales, UK | 53° 2' 11" N | 4° 19' 10" W | 9.5km (5.9 miles) | |
| Llanddwyn Bay, Rhosyr, Isle of Anglesey, Wales, UK | 53° 8' 22" N | 4° 24' 31" W | 9.7km (6.0 miles) | |
| Mynydd Drws-y-Coed, Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK | 53° 2' 49" N | 4° 10' 4" W | 10.2km (6.3 miles) | |
| Pont Marquis Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 12' 5" N | 4° 20' 46" W | 10.8km (6.7 miles) | |
| Dinorwic Quarry, Llanddeiniolen, Gwynedd, Wales, UK | 53° 7' 22" N | 4° 5' 59" W | 11.3km (7.0 miles) | |
| Tai Hirion Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 12' 51" N | 4° 19' 26" W | 11.5km (7.2 miles) | |
| Glantraeth Colliery, Bodorgan, Isle of Anglesey, Wales, UK | 53° 11' 49" N | 4° 22' 36" W | 11.5km (7.2 miles) | |
| Marquis Colliery, Bodorgan, Isle of Anglesey, Wales, UK | 53° 12' 13" N | 4° 21' 42" W | 11.6km (7.2 miles) | |
| Tyn-y-Flat Colliery, Bodorgan, Isle of Anglesey, Wales, UK | 53° 12' 11" N | 4° 21' 59" W | 11.7km (7.3 miles) | |
| Morfa-mawr Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 13' 9" N | 4° 19' 5" W | 11.9km (7.4 miles) | |
| Marchlyn Slate Quarry, Llanddeiniolen, Gwynedd, Wales, UK | 53° 8' 29" N | 4° 5' 38" W | 12.0km (7.4 miles) | |
| Pen-Crug Colliery, Llangristiolus, Isle of Anglesey, Wales, UK | 53° 12' 38" N | 4° 21' 31" W | 12.1km (7.5 miles) | |
| Berw Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 13' 37" N | 4° 18' 12" W | 12.5km (7.8 miles) | |
| Beddgelert Forest, Beddgelert, Gwynedd, Wales, UK | 53° 1' 44" N | 4° 8' 34" W | 12.8km (8.0 miles) | |
| Marchlyn Mawr, Llanddeiniolen, Gwynedd, Wales, UK | 53° 8' 9" N | 4° 4' 8" W | 13.5km (8.4 miles) | |
| Cwm-y-Llan slate mine, Betws Garmon, Gwynedd, Wales, UK | 53° 2' 50" N | 4° 5' 40" W | 13.9km (8.6 miles) | |
| Nant a Colliery, Llanfihangel Ysgeifiog, Isle of Anglesey, Wales, UK | 53° 14' 28" N | 4° 16' 44" W | 13.9km (8.7 miles) | |
| Shadow Gully, Beddgelert, Gwynedd, Wales, UK | 53° 3' 36" N | 4° 4' 49" W | 14.0km (8.7 miles) | |
| Britannia Mine, Beddgelert, Gwynedd, Wales, UK | 53° 4' 16" N | 4° 3' 57" W | 14.4km (8.9 miles) | |
| Ogof Owain Glyndwr, Moel Hebog, Beddgelert, Gwynedd, Wales, UK | 53° 0' 28" N | 4° 8' 52" W | 14.5km (9.0 miles) | |
| Penrhyn Slate Quarry, Llandygai, Gwynedd, Wales, UK | 53° 9' 43" N | 4° 3' 51" W | 14.5km (9.0 miles) | |
| Penrhyn Mine, Llandegai, Gwynedd, Wales, UK | 53° 12' 26" N | 4° 6' 14" W | 14.9km (9.3 miles) | |
Drws-y-Coed Mine, Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK