<a href="https://en.wikipedia.org/wiki/Karst_topography" class="extiw" title="en:Karst topography">karst</a> spring of river <a href="https://en.wikipedia.org/wiki/Gacka" class="extiw" title="en:Gacka">Gacka</a>: Majerovo vrilo, near <a href="https://en.wikipedia.org/wiki/Oto%C4%8Dac" class="extiw" title="en:Otočac">Otočac</a>, <a href="https://en.wikipedia.org/wiki/Croatia" class="extiw" title="en:Croatia">Croatia</a>.
<a href="//commons.wikimedia.org/wiki/User:Roberta_F." title="User:Roberta F.">Roberta F.</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>