Rinquelle, <a href="https://en.wikipedia.org/wiki/Karst_spring" class="extiw" title="en:Karst spring">karst spring</a> near Amden, Canton St. Gallen, <a href="https://en.wikipedia.org/wiki/Switzerland" class="extiw" title="en:Switzerland">Switzerland</a>
<a href="//commons.wikimedia.org/wiki/User:Ekem" title="User:Ekem">Ekem</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>