Archive6525510TitleAP2019_412_004 - RCAHMW Colour Oblique Digital Aerial PhotographsLevelItemDescriptionLlyn Clywedog reservoir and damn, with Bryn y Tail mining trail below, north west of Llanidloes. Oblique aerial photograph taken during the Royal Commission?s programme of archaeological aerial reconnaissance by Toby Driver on 2nd April 2015.MediumPhoto.Imagesy