Abersoch Abersoch Abersoch 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 Dolbadarn Castle Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Dinorwig Slate Quarries Abersoch Abersoch Abersoch Abersoch Abersoch Abersoch Abersoch Ganllwyd Ganllwyd Ganllwyd Brecon Beacons Boat House foundations Upper Lake Steps under restoration Llewelyn Bridge Ancient Culvert Ancient Culvert Ancient Culvert Ancient Culvert Stepping Stones Stepping Stones Lower Lake