Reservoir Obermaubach, <a href="https://en.wikipedia.org/wiki/Eifel" class="extiw" title="en:Eifel">Eifel</a>, <a href="https://en.wikipedia.org/wiki/Germany" class="extiw" title="en:Germany">Germany</a>
<a href="//commons.wikimedia.org/wiki/User:Peter_Tritthart" title="User:Peter Tritthart">Peter Tritthart</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>