Rhif ArchifTeitlLefelDisgrifiadCyfrwngDelweddauRhif Archif6506743TeitlAP2018_065_002 - RCAHMW Colour Oblique Digital Aerial PhotographsLefelItemDisgrifiadGarreg-Ddu dam, valve and reservoir and Coed-y-Foel pill boxes at the Elan Valley water scheme. Oblique aerial photograph taken during the Royal Commission's programme of archaeological aerial reconnaissance by Toby Driver on 3rd June 2015.CyfrwngPhoto.DelweddauyRhif Archif6506744TeitlAP2018_065_003 - RCAHMW Colour Oblique Digital Aerial PhotographsLefelItemDisgrifiadGarreg-Ddu dam, valve and reservoir and Coed-y-Foel pill boxes at the Elan Valley water scheme. Oblique aerial photograph taken during the Royal Commission's programme of archaeological aerial reconnaissance by Toby Driver on 3rd June 2015.CyfrwngPhoto.DelweddauyRhif Archif6506745TeitlAP2018_065_004 - RCAHMW Colour Oblique Digital Aerial PhotographsLefelItemDisgrifiadGarreg-Ddu dam and reservoir, and Coed-y-Foel pill boxes at the Elan Valley water scheme. Oblique aerial photograph taken during the Royal Commission's programme of archaeological aerial reconnaissance by Toby Driver on 3rd June 2015.CyfrwngPhoto.DelweddauyRhif Archif6535605TeitlAWP_351_02_02_31 - Archaeology Wales Project ArchivesLefelItemDisgrifiadElan Valley pill box, seen through woodland from the road, looking east. Photographed for Archaeological Desk Based Assessment of Afon Claerwen, Elan Valley, Rhayader, Powys. Assessment by Archaeology Wales in 2018. Report no. 1681. Project no. 2573.CyfrwngPhoto.Delweddauy