Record-low water levels in the Danube have exposed remnants of Europe’s Nazi past, with dozens of second world war ships emerging from the riverbed during an intense drought. View image in fullscreen The wreckage of a second world war German warship near Prahovo, Serbia on Tuesday. Photograph: Darko Vojinović/APOther second world war remnants have been found in other parts of the river, including a German military motorcycle in Budapest, Hungary. View image in fullscreen A second world war German military motorcycle is displayed at the defence ministry museum in Budapest, Hungary on Wednesday. The Danube, which flows through 10 countries, has become increasingly difficult to navigate as low water levels create dangerous conditions.