National Grid location marker for emergency location on a snowmobile trail.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/53801642@N06">Superior National Forest</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/superiornationalforest/27294300979/">National Grid location marker for emergency location on a snowmobile trail.</a>