View of the permafrost tunnel in <a href="https://en.wikipedia.org/wiki/Fox,_Alaska" class="extiw" title="w:Fox, Alaska">Fox, Alaska</a>.
Public Affairs Office Fort Wainwright
CC BY 2.0
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/fortwainwright/12529095903/">https://www.flickr.com/photos/fortwainwright/12529095903/</a>