Solarvogel von Odo Rumpf am Kölner Rheinufer (Am Leystapel)
<a href="//commons.wikimedia.org/wiki/User:Rolf_H." title="User:Rolf H.">Rolf H.</a> (Rolf Heinrich, Köln)
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>