Pig shelters (called arks or hoop houses) at a British farm sanctuary.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/87316606@N00">Dave Crosby</a>
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/87316606@N00/2823310792/">Hillside.org.uk - West Runton</a>