NPS / Jacob W. Frank
<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/21571273146/">Backpackers on the Kennecott Glacier Trail</a>