National Slate Museum National Slate Museum National Slate Museum National Slate Museum National Slate Museum National Slate Museum National Slate Museum National Slate Museum National Slate Museum National Slate Museum National Slate Museum National Slate Museum Llanberis Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Llanberis Dolbadarn Castle Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Llanberis Lake Railway Pontcysyllte Aqueduct Abersoch Plas Glyn y Weddw Gallery Llanbedrog viewpoint Llanbedrog viewpoint Llanbedrog The Tin Man, Llanbedrog Llanbedrog Morfa Nefyn Porthdinllaen Porthdinllaen Porthdinllaen Porthdinllaen Lifeboat Porthdinllaen Porthdinllaen Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries