Record low water levels along the Danube River, caused by a prolonged heatwave and drought across Europe, have revealed a trove of historical artifacts, including the remains of a woolly mammoth and a Nazi-era motorcycle, while simultaneously disrupting crucial infrastructure.
Scientists examining the riverbanks near Ryahovo, Bulgaria, discovered well-preserved bones believed to belong to an ancient woolly mammoth. The collection includes a jawbone with teeth, tusk fragments, a shoulder blade, and a femur head, found in late July. These ancient creatures co-existed with early humans.
In Budapest, Hungary, a rusted but recognizable Nazi-era military motorcycle was recovered from the Danube's shores. Military personnel cleaned and preserved the vehicle, which is now on display at the Military History Institute and Museum.
Several Nazi-era warships have also emerged from the low waters. One, heavily damaged but largely intact, was found near the Djerdap II dam between Romania and Serbia. Another, with its hull and motor visible, was spotted on the riverbed in Baja, Hungary. In Gigen, Bulgaria, the foundations of the ancient Constantine Bridge, commissioned by Roman Emperor Constantine I and inaugurated in 328 AD, became visible as the water receded.
Infrastructure Impacts Amid Historic Drought
The drought affecting the Danube has had significant consequences for regional infrastructure. Hungary was forced to reduce operations at its sole nuclear power plant, Paks, due to insufficient cooling water from the river. The plant, which typically runs on eight turbines, was operating at about 10 percent capacity with only one turbine active. Prime Minister Peter Magyar announced that efforts were underway to restart a second turbine after the Danube rose slightly.
Romania has also faced energy challenges, declaring a state of energy emergency and rerouting Danube flow to ensure its nuclear plant could continue operating. The economic impact of the widespread drought across Europe has been substantial, estimated in the hundreds of billions of euros, affecting power production, shipping, and public health systems.
In response to the energy crisis, the Hungarian government is diversifying its energy supply, planning to tender for 700 megawatts of wind power generation capacity and develop four gigawatts by 2030.
Europe's Record Heat and Climate Change
The dry conditions are part of a larger pattern of extreme weather events across Europe. Western Europe experienced its hottest June-July on record, according to the EU's Copernicus Climate Change Service. The combined average temperature in western Europe for these months was 21.62 degrees Celsius (70.92 degrees Fahrenheit), surpassing the previous record from 2022. Soil moisture levels are reported to be significantly lower than in July 2022.
Scientists attribute the intensification of heat extremes and the reinforcing cycle of heat and drought to climate change. Spain recorded its joint-hottest July since records began in 1961, with minimal rainfall. The country also experienced devastating wildfires, including one of the largest in its history, which burned over 50,000 hectares and forced tens of thousands to evacuate.
France has also seen record-breaking temperatures and heatwaves, leading to increased mortality and large-scale evacuations due to wildfires, particularly in the southwest. Very dry conditions have been noted across western and central Europe, impacting river flows on the Seine, Rhine, and Danube, and affecting transport, irrigation, and energy production.
Globally, July was the joint second-warmest on record, with ocean temperatures reaching new highs, influenced by marine heatwaves and the developing El Niño phenomenon. Scientists warn that greenhouse gas emissions remain the primary driver of this warming trend, with oceans absorbing a significant portion of the excess heat. This warming of seas can lead to more severe storms and other climate-related impacts.