The Krka River is a natural karst phenomenon that consists of seven tufa barriers with a total downward gradient of 242 m. The most oft-visited parts of Krka National Park are the Roški and Skradinski Falls.
Out of the eight national parks in Croatia, this one receives the most visitors and is one of the most distinguished. In 1979 it was among the first in the world to be registered in the World Heritage List (UNESCO).