Reinier van den Berg in 2011 op <a href="//commons.wikimedia.org/w/index.php?title=Twente_Ballooning&amp;action=edit&amp;redlink=1" class="new" title="Twente Ballooning (page does not exist)">Twente Ballooning</a>
<a href="//commons.wikimedia.org/w/index.php?title=User:Koenk68&amp;action=edit&amp;redlink=1" class="new" title="User:Koenk68 (page does not exist)">Koenk68</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>