Staffan Widstrand / Reindeer trekking with Saami, Lapland, Sweden, Model released
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Ashley Cooper / Passengers on an expedition cruise climbing the caldera on Deception Island, South Shetland Islands, Antarctic Peninsula. February 2014.
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Tim Laman / Jessica and Russell Laman wade ahead while other team members hike and pull the loaded boat up the Air Putih river, Gunung Palung National Park. August 2010
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Jean E. Roche / Family with dog relaxing during hike to Abbaye Notre-Dame de Lure, France, April.
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Brent Stephenson / Small lake above Fortuna Bay, suggested to be along the route which Shackleton and his men took when crossing South Georgia on their way down to Stromness South Georgia, South Atlantic, January 2012.
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Tim Laman / Russell Laman photographing Crean Lake on the hike between Fortuna Bay and Stromness, retracing part of Shackleton's route. South Georgia, February 2011. Model released.
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Steve O. Taylor (GHF) / Mountain guides and camera assistant resting on hike to Sankanbiriwa mountain. Sierra Leone, 2004-2005.
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Steve O. Taylor (GHF) / Mountain stream on the hike to Sankanbiriwa mountain. Sierra Leone, 2004-2005.
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Steve O. Taylor (GHF) / Mountain peaks viewed on the hike to climb Sankanbiriwa, Sierra Leone's second highest peak. Sierra Leone, 2004-2005.
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Steve O. Taylor (GHF) / Mountain peaks viewed on the hike to climb Sankanbiriwa, Sierra Leone's second highest peak. Sierra Leone, 2004-2005.
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Tim Laman / Hike to the base camp on Fergusson Island through flooded forest, with porters carrying gear on their heads, D'Entrecasteaux Islands, Papua New Guinea, September 2011
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Staffan Widstrand / Ranveig Eckhoff, a journalist, on a wilderness trail hike in iMfolozi National Park, South Africa