Basic Mountaineering Course 11-02 stay roped together as they traverse across the Gulkana Glacier, deep in Alaska's back country.  The BMC teaches crevasse rescues techniques, team work, safety and cold weather survival.  (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/5956722298/">NWTC_BMC-91</a>