<a href="//commons.wikimedia.org/wiki/Forest" title="Forest">Forest</a> ceiling
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/84108876@N00">Jason Pratt</a> from Pittsburgh, PA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/jasonpratt/2625819/">Trees and light</a>