Michael Quinton / North American River Otter (Lontra canadensis) on iced over river, Yellowstone National Park, Wyoming
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Ashley Cooper / Mountaineer testing the thickness of ice on sprinkling Tarn to see if it safe to walk on, Lake District, England, UK. March 2013
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Ashley Cooper / Snowy weather in Ambleside during the December 2010 big chill, Lake District, England, UK. December 2010
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Ashley Cooper / Frozen hand print on an iced over car window, Ambleside, Cumbria UK. December 2008
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Ashley Cooper / 'Brrrrrr' written on a car window in the frost, Ambleside, Cumbria UK. December 2008
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Ashley Cooper / Derwent Water completely frozen over with cycle tracks, Keswick, Lake District, England, UK, December 2010.
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Ashley Cooper / Derwent Water completely frozen over with cycle tracks, Keswick, Lake District, England, UK, December 2010.
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Ashley Cooper / Derwent Water at Keswick in the Lake District completely frozen over during the December 2010 big chill, with footsteps from a walker who walked across the lake. December 2010
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Christophe Courteau / The Moskva river, iced over in winter, Kremlin on the left, Moscow, Russia, January 2016
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Nick Upton / Tawny funnel (Lepista flaccida) iced over on cold morning, Millook Valley Woods, Cornwall, UK, November.
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Bryan and Cherry Alexander / Saami reindeer herder using a stick to probe through the snow in order to check if winter pastures have iced over. Kautokeino, Finnmark, North Norway, March 2007.
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Jim Brandenburg / Iced over Lake Superior, Michigan
