Kaluđerovac lake and cave in the background, also boardwalk under the Great Cascade.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/84102262@N07">Matjaž Metaj</a>
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<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/84102262@N07/7700476206">Plitvice 093 jezero Gavanovac in jama nazaj</a>