NPRNTeitlMath O SafleArchifauDelweddauNPRN40571TeitlVivian Slate QuarryMath O SafleCHWAREL LECHIArchifau83Delweddau51NPRN93541TeitlDolbadarn Castle, LlanberisMath O SafleCASTELLArchifau181Delweddau106NPRN300956TeitlMoel-y-Gest Hillfort, W. of PorthmadogMath O SafleLLOC AMDDIFFYNNOLArchifau22Delweddau7NPRN93634TeitlDinorwic Quarry WorkshopMath O SafleCHWARELArchifau31Delweddau0NPRN41155TeitlDinorwic Workshops, Blacksmith's ShopMath O SafleGWEITHDY’R GOFArchifau8Delweddau0NPRN275726TeitlDinorwic Quarry Barracks and 'A' Inclines; Anglesey Barracks, LlanberisMath O SaflePLÂN AR OLEDDArchifau25Delweddau12NPRN33618TeitlWaterwheel, Gilfach Ddu Workshops, Dinorwic Slate Quarry; National Slate MuseumMath O SafleOLWYN DDŴRArchifau10Delweddau4NPRN33613TeitlDinorwic Pelton WheelMath O SafleOLWYN DDŴRArchifau6Delweddau0
