Drought conditions have given up clues to previously unknown ancient settlements in Wales, which experienced some of the hottest days ever in the UK in July. Dr Toby Driver is aerial commissioner for the Royal Commission on the Ancient and Historical Monuments of Wales. He spent days flying over north and south Wales earlier this month, recording traces of centuries-old sites, cropmarks of Bronze Age barrows, prehistoric settlements, a Roman military settlement and parched landscapes.
Lynn Freeman speaks with Toby Driver
