The Sana river wellspring-group with the Korana stream and Mrčaj Cave, and the Ribnik river wellspring-group.
<a href="//commons.wikimedia.org/wiki/User:Santasa99" title="User:Santasa99">Santasa99</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>