NPRNTeitlMath O SaflePerthynasNPRN91590TeitlBlaenavon World Heritage Site AreaMath O Saflen/aPerthynasPart ofNPRN85860TeitlHill's TramroadMath O Saflen/aPerthynasPart ofNPRN85831TeitlHill's Tramroad: Pwll Du Tunnel South PortalMath O Saflen/aPerthynasConsists ofNPRN34976TeitlHill's Tramroad: Pwll Du Tunnel North PortalMath O Saflen/aPerthynasConsists ofNPRN91754TeitlHill's Tramroad: Pwll Du Tunnel North East PortalMath O Saflen/aPerthynasConsists ofNPRN88077TeitlBlaenavon Industrial Landscape ProjectMath O Saflen/aPerthynasPart of
