Archive6518245TitleAP2018_926_007 - RCAHMW Colour Oblique Digital Aerial PhotographsLevelItemDescriptionHenbarc mine office,cottage, dwelling & pigsty; Tan-y-chwarel house & a spoil heap at Cwmystwyth Lead Mine. Oblique aerial photograph taken during the Royal Commission's programme of archaeological aerial reconnaissance by Toby Driver, 4th February 2015.MediumPhoto.Imagesy