The Kozjak brook, feeding the So?a river from the east (on the left), springs high beneath Mt. Krn?ica (2142 m), and runs through many pools making six waterfalls. One of Slovenia??? most picturesque waterfalls, the Veliki Kozjak, was created in the outlet of the lower Korita of the Kozjak Brook.Approximately 250 meters lower, the water falls again. Here, the waterfall carved an underground hall. Its bottom is covered by a vast blue and green pool, and its walls are reminiscent of those in the Karst caves. A 15 meter high white water column offers its visitors an unforgettable scenery.