Danube River:

The remains of a mammoth were recently discovered in northern Bulgaria as Danube River levels reached a historic low, revealing bones potentially thousands of years old.
- Danube River is the second-longest river of the European continent, after the Russian Volga River.
- It flows from the confluence of the Brigach and Breg rivers, close to the German town of Donaueschingen in the Black Forest region of Germany.
- The river passes through 10 European nations: Germany, Austria, Hungary, Serbia, Bulgaria, Croatia, Slovakia, Moldova, Ukraine, and Romania.
- It ultimately drains into the Black Sea via the Danube Delta.
- The Danube delta is located in the Tulcea County of Romania and it is comparatively young and continuously growing.
- It is a UNESCO World Heritage Site renowned for its rich biodiversity.
- The Danube is fed by major tributaries like the Inn, Drava, Sava, Tisza, Prut, and Siret.
- The Danube River flows directly through many significant European cities, including four national capitals – Vienna (Austria), Bratislava (Slovakia), Budapest (Hungary), and Belgrade (Serbia).
- Countries along the river ship goods from ports of Belgrade, Serbia; Budapest, Hungary; Vienna, Austria; and Regensburg, Germany.
- Through the Rhine-Main-Danube Canal, it connects the North Sea at Rotterdam to the Black Sea at Sulina, forming a trans-European inland waterway.


