NPRNTeitlMath O SaflePerthynasNPRN85830TeitlHill's Tramroad: Pwll Du TunnelMath O Saflen/aPerthynasPart ofNPRN91590TeitlBlaenavon World Heritage Site AreaMath O Saflen/aPerthynasPart ofNPRN85860TeitlHill's TramroadMath O Saflen/aPerthynasPart ofNPRN34976TeitlHill's Tramroad: Pwll Du Tunnel North PortalMath O Saflen/aPerthynasAssociated withNPRN91754TeitlHill's Tramroad: Pwll Du Tunnel North East PortalMath O Saflen/aPerthynasAssociated withNPRN88077TeitlBlaenavon Industrial Landscape ProjectMath O Saflen/aPerthynasPart of
