NPRNTeitlMath O SaflePerthynasNPRN40594TeitlCwmorthin Slate QuarryMath O Saflen/aPerthynasConsists ofNPRN415776TeitlHolland's Level, Upper QuarryMath O Saflen/aPerthynasConsists ofNPRN404307TeitlGloddfa Ganol QuarryMath O Saflen/aPerthynasConsists of
