I dare to say that Kozjak Waterfall is one of the most special places in Slovenia. 

What makes this place so special is that the waterfall is located inside a cave, hidden at the end of a beautiful path along the river. The fall is 15 meters high and creates a beautiful crystal-clear pool underneath.

Another great thing about Kozjak is that the access is super easy. You need to do a short hike to get to it, but the entire path is flat and very accessible. Honestly, I wouldn’t even call it a hike, it’s more of a walking trail.