Korana
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Korana is a river in central Croatia long 144 km. It rises in the eastern parts of Lika, creates the world-famous Plitvice Lakes (an UNESCO World Heritage), touches the border with Bosnia and Herzegovina for a few kilometers and flows northwards where it finally reaches the river Kupa at Karlovac.
The soil of the karst region, through which this river flows consists of limestone. Under certain physical and chemical conditions the river is constantly creating new soil from plants (see: Plitvice Lakes).