A closeup of <a href="//commons.wikimedia.org/wiki/Category:Fort_Knox_(Maine)" title="Category:Fort Knox (Maine)">Fort Knox</a> from the <a href="//commons.wikimedia.org/wiki/Category:Penobscot_Narrows_Bridge_and_Observatory" title="Category:Penobscot Narrows Bridge and Observatory">Penobscot Narrows Bridge and Observatory</a>.
Photo by and (c)2014 Derek Ramsey (<a href="https://en.wikipedia.org/wiki/User:Ram-Man" class="extiw" title="en:User:Ram-Man">Ram-Man</a>)
CC BY-SA 4.0
<span class="int-own-work">Self-photographed</span>