I guess there are few positive effects of the drought we have had in the UK this summer, but this is one secret that has been revealed, it always amazes me how from the air, we can still see so many imprints of ancient sites lost in time. LINK The scorching weeks of the summer of 2018 left crops shrivelled and gardens scorched. It has also revealed the lines of scores of archaeological sites across the UK landscape, tracing millennia of human activity, from neolithic cursus monuments laid out more than 5,000 years ago to the outline of a long-demolished Tudor hall and its intended replacement.
They are outlines of ancient walls, buildings and foundations of stone circles, places of worship and other earth disturbances, from ancient civilisations, @Shirley Martin it's interesting how these disturbances to the natural landscape, which are only really visible from the air, last for for so many millennia.
They say that some of them go back to 3000BC First known case I think is reffered to as the Chedder man up to 10000BC