The Nazi shipwrecks emerging from the Danube
Reuters/ Djordje KojadinovicAs the Danube shrinks under extreme heat, the river is revealing a startling remnant of Europe's wartime past.
This month, record-low water levels on the Danube have exposed at least 20 German warships near Prahovo in eastern Serbia. Rusted hulls and broken masts are emerging from the river – the remains of a Nazi Black Sea fleet deliberately scuttled during World War Two.
Wrecks have surfaced during previous droughts, but this summer's extreme heat and drought have brought dozens of vessels back into view. Some are believed to contain weapons and explosives, turning this stretch of one of Europe's great cruising rivers into an eerie, visible battlefield.
For travellers cruising along the Danube this summer, the falling water is revealing a landscape – and history – normally hidden beneath the river.
Eighty-two years beneath the Danube
The story of how they got there begins more than eight decades ago. By 1944, German forces were retreating on the Eastern Front as the Soviets advanced through the region, leaving a fleet of around 200 Nazi Black Sea vessels stranded in what was an area rapidly falling under Soviet control.
The Danube offered an escape route, but the Iron Gates – a narrow and historically treacherous stretch of the river – created a bottleneck. In September 1944, German Rear Admiral Paul-Willy Zieb ordered more than 200 vessels scuttled as the Red Army closed in. The ships were deliberately sunk to prevent their capture and obstruct the Soviet advance.
Most have remained submerged beneath the river ever since, partly because many still contain unexploded ordnance and pose a hazard to navigation. Serbia has launched an estimated €30m removal programme to remove some of the vessels, but progress has been slow because clearing the riverbed safely is complex.
For travellers, it's a striking sight along Europe's second-longest river, which stretches roughly 2,850km (1,770 miles) across 10 countries and centuries full of falling empires and shifting allegiances.
Kenneth Reece, a travel planner who recently cruised the lower Danube aboard the Avalon Passion, says reminders of the region's turbulent history surrounded them throughout their trip.
Reuters/Zorana Jevtic"We visited medieval fortresses, heard stories about life under communism and dictatorship, learned about the wars that have shaped this region and travelled through places where some of that history is still within living memory," Reece said. "Hearing about the WWII-era German shipwrecks beneath the Danube added another layer… The history wasn't only in museums or monuments. Some of it was quite literally beneath us."
How to see what the Danube has revealed
Nazi shipwrecks – Prahovo, Serbia: At least 20 wrecks have been visible from the riverbank at Prahovo, near the Serbian-Romanian border, this summer. Some are still believed to contain weapons or explosives, so they should be viewed from the bank rather than approached. Visibility will change as river levels rise and fall.
Woolly mammoth remains – Ruse, Bulgaria: Bones exposed near the village of Ryahovo in July have been recovered by specialists from the Regional History Museum in Ruse. After conservation and study, they're expected to go on display at the museum, about 30km from where they were found.
What else the river is revealing
The Nazi ships aren't the only remnants emerging as the Danube falls.
This August, receding water has also exposed a German army Wehrmacht motorcycle in Budapest and a 1,543lb British bomb near Virt, Slovakia, which was later safely detonated. At Gigen in Bulgaria, falling water has revealed the remains of the ancient Constantine Bridge, while near Ryahovo, archaeologists unearthed woolly mammoth tusks and bones dating back thousands of years.
"For archaeologists, these moments are extremely valuable," Pavel Popov of the Regional Historical Museum in Pleven told Reuters. "It gives us a rare opportunity to observe, document and study it in its real environment."
Droughts and fluctuating water levels are not new to the Danube. Europe is the fastest-warming continent, according to the EU's Copernicus Climate Change Service, warming at more than twice the global average. Rising temperatures are intensifying heat extremes and altering rainfall patterns, contributing to repeated low-water events that disrupt navigation along the river.
"The Danube was revealing warnings from our past while, at the same time, perhaps giving us a warning about our future," Reece said.
Reuters/ Djordje KojadinoviWhat low water means for travellers
The consequences are already being felt by visitors to the region. This summer's low waters have forced Danube cruise operators to cancel sailings, change itineraries, transfer passengers between ships and use coaches to bypass unnavigable sections of the river.
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Yet the changing river can also transform what travellers encounter along the way.
"We never realised that we would sail directly over the sunken German warships," said Suzanna Fulton, who recently cruised on the Viking Honir. "It was humbling and quite honestly, a cool experience."
Reece said seeing evidence of the Danube's wartime history made the beauty and peacefulness of the river feel more poignant.
"Today, you can sit on the deck of a river cruise ship with a glass of wine and watch these beautiful countries pass by, but this same landscape has witnessed war, fascism, oppression and tremendous human suffering," he said. "I think that's what stayed with me most. The Danube wasn't simply taking us through Europe. In many ways, it was taking us through Europe's history."
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