Gas tanks for the gas power plant at <a href="https://en.wikipedia.org/wiki/Power_plant_Kassel" class="extiw" title="en:Power plant Kassel">en:Power plant Kassel</a>.
<a href="//commons.wikimedia.org/wiki/User:Markus_Schulenburg" title="User:Markus Schulenburg">User:Markus Schulenburg</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>