During the crevasse rescue demonstration, an instructor from the Northern Warfare Training Center is lowered into a glacier crevasse where students of Basic Mountaineering Course 11-02 will have to rescue him as part of the course’s realistic training.  (Army Photo by Staff Sgt. Brehl Garza, U.S. Army Alaska)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/46594102@N05">U.S. Army Alaska (USARAK)</a> from Anchorage, Alaska, U.S.
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/usarak/5956745632/">NWTC_BMC-94</a>