NPRNTeitlMath O SaflePerthynasNPRN91634TeitlPwll-Du Quarries: Balance ShaftMath O Saflen/aPerthynasPart ofNPRN91590TeitlBlaenavon World Heritage Site AreaMath O Saflen/aPerthynasPart ofNPRN85859TeitlPwll-Du Limestone QuarriesMath O Saflen/aPerthynasAssociated with
