The Krka river certainly is the most fascinating and breathtaking rivers of Croatia. The Krka river is known by its numerous waterfalls formed, like the Plitvice lakes, thanks to the deposits of travertine (form of limestone deposited by mineral springs). The Krka National Park comprises most of the Krka river course and the sorrounding river coast, from the historic city of Knin, not far from the Krka river sources, until Skradin, where the Krka river course starts to become a long and deep maritim gulf. The Krka river alternates its course between spectacular canyons cutting the limestone plateau, and lakes, especially in the part with the two more beautiful and highest waterfalls: Skradinski buk and Roski slap.