A drone view shows a sunken German warship from World War II, exposed due to low Danube River levels caused by drought and extreme heat, in Prahovo, Serbia, July 30, 2026. Historians say up to 200 German warships were scuttled in September 1944 near Prahovo in the Danube gorge as they came under Soviet fire. In 2024, a trove of sunken Nazi ships, still decked out with explosives, emerged in the Danube following a blistering summer drought. Dozens of scattered ships operated by Nazi Germany's Black Sea fleet also appeared in 2022 near Prahovo after water levels reached record lows. Mammoth bones found on parched riverbedMeanwhile, falling water levels in the Danube unveiled bones of a mammoth in Bulgaria, a local museum director told AFP.