This   file was uploaded  with <a href="//commons.wikimedia.org/wiki/Commons:Commonist" title="Commons:Commonist">Commonist</a>.
Markus Schulenburg (<a href="//commons.wikimedia.org/wiki/User:Markus_Schulenburg" title="User:Markus Schulenburg">User:Markus Schulenburg</a>)
CC BY-SA 4.0
<span class="int-own-work">Self-photographed</span>