Krka River is a natural and karst phenomenon with its seven travertine waterfalls. Skradinski buk is the biggest and probably the most famous. Roški slap is surrounded with numerous mills. Bilušića buk is the first of these seven cascades while Brljan is the second one. Manojlovac is the highest. Miljacka slap is hidden in lush vegetation. Rošnjak, hidden between 200 m high cliffs, is the only waterfall of Krka that cannot be approched.