| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Ogof Owain Glyndwr, Moel Hebog, Beddgelert, Gwynedd, Wales, UK | 53° 0' 28" N | 4° 8' 52" W | 7.2km (4.5 miles) | |
| Gorseddau Quarry, Dolbenmaen, Gwynedd, Wales, UK | 52° 59' 12" N | 4° 7' 42" W | 7.6km (4.7 miles) | |
| Tremadoc, Porthmadog, Gwynedd, Wales, UK | 52° 56' 19" N | 4° 8' 29" W | 7.7km (4.8 miles) | |
| Pontlyfni meteorite, Clynnog, Gwynedd, Wales, UK | 53° 2' 11" N | 4° 19' 10" W | 8.8km (5.5 miles) | |
| Beddgelert Forest, Beddgelert, Gwynedd, Wales, UK | 53° 1' 44" N | 4° 8' 34" W | 9.0km (5.6 miles) | |
| Twll Maen Grisial, Fron Olau, Prenteg, Dolbenmaen, Gwynedd, Wales, UK | 52° 56' 53" N | 4° 6' 47" W | 9.0km (5.6 miles) | |
| Prenteg, Dolbenmaen, Gwynedd, Wales, UK | 52° 57' 4" N | 4° 6' 19" W | 9.4km (5.8 miles) | |
| Mynydd Drws-y-Coed, Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK | 53° 2' 49" N | 4° 10' 4" W | 9.5km (5.9 miles) | |
| Benallt Mine, Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK | 53° 3' 29" N | 4° 11' 4" W | 10.1km (6.3 miles) | |
| Simdde Dylluan Mine (Talysarn Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK | 53° 3' 24" N | 4° 10' 27" W | 10.2km (6.4 miles) | |
| Drws-y-Coed Mine (Drwy-y-Coed Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK | 53° 3' 30" N | 4° 10' 15" W | 10.5km (6.5 miles) | |
| Pen-y-chain, Llannor, Gwynedd, Wales, UK | 52° 53' 31" N | 4° 19' 35" W | 10.8km (6.7 miles) | |
| Minffordd Quarry, Llanfrothen, Gwynedd, Wales, UK | 52° 55' 49" N | 4° 5' 31" W | 11.0km (6.8 miles) | |
| Cwm Bychan Mine, Beddgelert, Gwynedd, Wales, UK | 53° 0' 22" N | 4° 4' 50" W | 11.3km (7.0 miles) | |
| Sygun Mine, Beddgelert, Gwynedd, Wales, UK | 53° 0' 55" N | 4° 4' 41" W | 11.8km (7.3 miles) | |
| Cwm-y-Llan slate mine, Betws Garmon, Gwynedd, Wales, UK | 53° 2' 50" N | 4° 5' 40" W | 12.7km (7.9 miles) | |
| Pantywrach Mine, Llanfrothen, Gwynedd, Wales, UK | 52° 56' 26" N | 4° 3' 24" W | 12.8km (8.0 miles) | |
| Trwyn-y-tal, Llanaelhaearn, Gwynedd, Wales, UK | 52° 59' 55" N | 4° 25' 45" W | 13.0km (8.1 miles) | |
| Tyddynbach Mine, Betws Garmon, Gwynedd, Wales, UK | 53° 5' 13" N | 4° 11' 5" W | 13.2km (8.2 miles) | |
| Bwlch y Plym Mine, Llanfrothen, Gwynedd, Wales, UK | 52° 57' 10" N | 4° 2' 38" W | 13.4km (8.3 miles) | |
| Ystrad Mine (Silurian Mine), Betws Garmon, Gwynedd, Wales, UK | 53° 5' 36" N | 4° 10' 50" W | 13.9km (8.6 miles) | |
| Catherine and Jane Consols, Maentwrog, Gwynedd, Wales, UK | 52° 56' 58" N | 4° 2' 5" W | 14.0km (8.7 miles) | |
| Carreg Fawr Mine, Betws Garmon, Gwynedd, Wales, UK | 53° 5' 49" N | 4° 10' 34" W | 14.4km (8.9 miles) | |
| Shadow Gully, Beddgelert, Gwynedd, Wales, UK | 53° 3' 36" N | 4° 4' 49" W | 14.4km (8.9 miles) | |
| Gimlet Quarry, Pwllheli, Gwynedd, Wales, UK | 52° 52' 55" N | 4° 23' 49" W | 14.6km (9.1 miles) | |
| Hafod y Llan workings, Beddgelert, Gwynedd, Wales, UK | 53° 2' 56" N | 4° 3' 15" W | 15.0km (9.3 miles) | |
| Pant-mawr Slates Mines, Llanfrothen, Gwynedd, Wales, UK | 52° 58' 54" N | 4° 0' 20" W | 15.7km (9.8 miles) | |
| Britannia Mine, Beddgelert, Gwynedd, Wales, UK | 53° 4' 16" N | 4° 3' 57" W | 15.9km (9.9 miles) | |
| Moel Goedog, Talsarnau, Gwynedd, Wales, UK | 52° 52' 30" N | 4° 3' 56" W | 16.0km (10.0 miles) | |
| Croesor Quarry, Llanfrothen, Gwynedd, Wales, UK | 52° 59' 28" N | 4° 0' 4" W | 16.1km (10.0 miles) | |
Prenteg, Dolbenmaen, Gwynedd, Wales, UK