NPRNTitleType Of SiteRelationNPRN91590TitleBlaenavon World Heritage Site AreaType Of Siten/aRelationPart ofNPRN85830TitleHill's Tramroad: Pwll Du TunnelType Of Siten/aRelationPart ofNPRN85860TitleHill's TramroadType Of Siten/aRelationPart ofNPRN85831TitleHill's Tramroad: Pwll Du Tunnel South PortalType Of Siten/aRelationAssociated withNPRN34976TitleHill's Tramroad: Pwll Du Tunnel North PortalType Of Siten/aRelationAssociated with
