Thanks to the constant process of travertine-building, the Krka River is a karst phenomenon and natureâ€™s priceless gift to man.
The present day appearance of the Krka canyon is the result of tectonic movements and surface karst-building processes in the carbonate layers. Following the Würm period of deglaciation in the Pleistocene, the melting of the ice on Earth cause the sea level to rise, thereby submerging today’s Adriatic coast. At that time, the estuary of the Krka River, from Šibenik to Prukljan Lake, was formed.
With the formation of the travertine layers in the post-Würm period, the Skradinski buk, Roški slap and the remaining waterfalls began to rise along the river’s course, thus causing the formation of Visovac Lake and the remaining water accumulations in the canyon part of the present day river. The only man-made accumulation is Brljan Lake, which was created as a reservoir for the Miljacka hydroelectric plant