The painted wall at Black Canyon, with the river flowing down below.<br>Painted Wall in Black Rock National Park
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/44124372247@N01">Jeff Kramer</a> from Austin, US
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/44124372247@N01/25377145">Flickr</a>