”Archeologist Toby Driver has, unlike his office-bound colleagues, spent much of the current heat wave/drought afflicting the United Kingdom — the seasonal average in Wales is 19 C, while present temperatures are 30-plus — peering down at a rain-starved landscape from a small plane.”

“Driver, a senior investigator for the Royal Commission on the Ancient and Historical Monuments of Wales (RCAHMW), has been on the hunt for crop marks. Rings and whirls and squares and unmistakable marks on the land, visible from the sky, indicating the presence of ancient settlements — Roman forts, Iron Age farms and Medieval castles — buried beneath.”