Royal Commission on the Ancient and Historical Monuments of Wales: Cropmarks 2018.
“The unprecedented spell of hot, dry weather across Wales has provided perfect conditions for archaeological aerial photography. As the drought has persisted across Wales, scores of long-buried archaeological sites have been revealed once again as â€˜cropmarks’, or patterns of growth in ripening crops and parched grasslands. The Royal Commission’s aerial investigator Dr Toby Driver has been busy in the skies across mid and south Wales over the last week documenting known sites in the dry conditions, but also discovering hitherto lost monuments. With the drought expected to last at least another two weeks Toby will be surveying right across north and south Wales in a light aircraft to permanently record these discoveries for the National Monuments Record of Wales, before thunderstorms and rain wash away the markings until the next dry summer.”
“A drone flight and a lingering dry spell have exposed a previously unknown monument in Ireland’s Boyne Valley, forgotten for thousands of years and long covered by crops — which, struggling to cope with a lengthy drought, finally revealed the ancient footprint.
Photographer and author Anthony Murphy discovered the site. He was flying a drone near Newgrange, a famous prehistoric stone monument in County Meath, on Tuesday, taking pictures of the known archaeological attractions. Then he saw something strange — a perfect circle, etched in the color of the crops, in an otherwise unremarkable field.”