VIENNA, AUSTRIA—Ground-penetrating radar and aerial photography have helped scientists from the Ludwig Boltzmann Institute for Archaeological Prospection and Virtual Archaeology and the Central Institute for Meteorology and Geodynamics discover what is thought to be the earliest Roman military encampment at the Archaeological Park Carnuntum, located on the Danube River in lower Austria. The Austrian Times reports that while investigating the area outside the western gate of the Roman town, the team found the encampment, which was fortified with a ditch, beneath the traces of a large village along the Roman road to Vindobona (Vienna).