A small (artificial) cascade of the Areuse river near to the Gorges de l'Areuse hiking trail, Switzerland.  The picture was taken with a 1000x ND filter.
<a href="//commons.wikimedia.org/wiki/User:Domob" title="User:Domob">Daniel Kraft</a>
<span class="int-own-work" lang="en">Own work</span>