Caribou trail across the sand dunes, Kobuk Valley National Park. Photo: NPS/Laura Cattrall.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/75182224@N04">National Park Service, Alaska Region</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/alaskanps/15667819384/">Caribou Trail-KOVA</a>