<p>A backcountry ranger on fall Noatak River patrol checks for boaters on the water and falcons that might nest on these cliffs of the lower Noatak Canyon. 
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Boat, ranger, cliff, and sand bar
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/41585865@N06">Western Arctic National Parklands</a>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/nps_wear/8516188371/">Noatak River Patrol</a>