Carreg Ddu viaduct and Foel Valve Tower, looking north-east. Photographed as part of Archaeological Desk Based Assessment of Afon Claerwen, Elan Valley, Rhayader, Powys. Assessment conducted by Archaeology Wales in 2018. Report no. 1681. Project no. 2573.Download and purchase options
NPRNTitleType Of SiteArchivesImagesNPRN752TitleGarreg-Ddu Dam, Elan Valley Water Scheme;Carreg Ddu Viaduct and Submerged DamType Of SiteDAMArchives60Images40NPRN32527TitleElan Aqueduct: Foel Valve Tower; Garreg-Ddu Reservoir Tower, Foel TunnelType Of SiteVALVE TOWERArchives19Images14