rusty bolt for the challenge "corroded objects"
<a href="//commons.wikimedia.org/w/index.php?title=User:E_preininger&amp;action=edit&amp;redlink=1" class="new" title="User:E preininger (page does not exist)">E preininger</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>