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April 21, 2014

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These needle-less branches on a tree in the Grand Canyon slowly accumulated freezing fog Dec. 1st, 2013 to grow these ribbon-like icy, but temporary, features. National Park Service photo by Erin Whittaker

National Park Service

These needle-less branches on a tree in the Grand Canyon slowly accumulated freezing fog Dec. 1st, 2013 to grow these ribbon-like icy, but temporary, features. National Park Service photo by Erin Whittaker