Skradinski buk is the longest and the most popular waterfall on the Krka River and is one of Croatia’s best known natural wonders. It is a massive, clear, natural pool with high waterfalls at one end and cascades at the other. The Skradinski buk is the lowest of the three sets of waterfalls formed along the Krka river and located approximately 13 kilometers downstream from Roški slap and a total of 49 kilometers downstream from the source. The growth of travertine barriers at Skradinski buk was caused by the unification of the waters of Krka River with the three kilometer lower current of the Čikola River at Roški slap, creating one of the most unusual and beautiful landscapes of the Krka National Park.
The combined waters of the Krka and Čikola Rivers flow over the 17 steps at Skradinski buk, distributed along the 800 meters in length. The width of the cascades is between 200 and 400 metres with a total height difference of around 45 meters. Travertine formations in the lower portion has caves and tufts while the upper portion of the river include thresholds, travertine islands, draperies and barriers. A walking trail has been constructed over the river that takes visitors on a light walk through the deep shade of lush Mediterranean and sub-Mediterranean vegetation.