The Caspian Sea.
Black Forest of Germany
the mouth is the black sea
Germany
Danube
River Danube originates in the Black Forest in Germany, somewhere north of Zurich (Switzerland) in the German territory.
danube
Danube (Dunărea in Romanian)
the river mouth
Danube River Danube River Danube River
Danube River
The Danube River is on the continent of Europe.
The Danube River is located in Europe.
Danube river gradient
The Danube is a river not a bridge