Extreme heatwaves across Europe have caused the Danube River to reach historic lows, exposing a haunting fleet of Nazi-era warships that have remained submerged for eight decades. Near the town of Prahovo, Serbia, receding waters have revealed over a dozen rusted vessels—including minesweepers and artillery barges—that were deliberately scuttled by retreating German forces in 1944 to block the Soviet advance. This environmental crisis has turned the river into a dangerous obstacle course for modern shipping, forcing the Serbian government to accelerate a long-planned salvage operation that began in 2020. Officials are concerned that many of these wrecks still contain unexploded ordnance, creating an urgent security risk as the waterway becomes increasingly narrow.

Beyond the logistical headache for river captains, the situation highlights the severe impact of climate change on European infrastructure and agriculture. With water levels currently three feet below seasonal averages, essential shipping routes are being restricted, and local authorities are even battling the discovery of additional wartime threats, such as a massive British naval mine found in Slovakia. While Serbian President Aleksandar Vucic has vowed to clear the riverbed of all 80 identified vessels, environmental experts warn that significant rainfall is unlikely in the near term. As the river continues to shrink, these submerged relics serve as a grim time capsule of World War II, surfacing alongside the modern-day struggle to manage the environmental toll of a sweltering continent.