Swiss archeologists redraw Roman maps following drought discovery

AVENCHES, Switzerland: Archeologists are redrawing Roman maps of Switzerland after traces of ‌long-buried ruins emerged as the country endured the hottest summer on record. Drought can reveal hidden archeological sites through "parch marks" created when vegetation above them withers, one of several effects of this year's heat waves, ​which also exposed World War 2 wrecks on riverbeds. Alerted by a history enthusiast, ​archeologists in the Swiss canton of Vaud used a drone to take daily images