Jack Dykinga / Yucca {Yucca schottii} and Bigtooth maples {Acer grandidentatum} in autumn colours, Huachuca mountains, Coronado National Forest, Arizona, USA
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Eric Baccega / Mist and autumn coloured tress at Bouchard lake. La Mauricie National Park, Quebec, Canada, October 2010
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Eric Baccega / Mist and autumn coloured tress in Modene lake. La Mauricie National Park, Quebec, Canada
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Eric Baccega / Mist and autumn coloured tress at Bouchard lake. La Mauricie National Park, Quebec, Canada, October 2010
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Eric Baccega / Mist and autumn coloured tress at Bouchard lake. La Mauricie National Park, Quebec, Canada, October 2010
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Jeff Vanuga / Autumn foilage along the Paintbrush Canyon Trail in Grand Teton National Park, Wyoming, USA, October 2008
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Jouan & Rius / Tropical rainforest bordering the beach, Masoala NP, Madagascar
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Philippe Clement / Agate House, an Indian pueblo (community) built with petrified wood. Petrified Forest National Park, Arizona, USA. 2007
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Adrian Davies / Exposed roots of European Beech tree (Fagus sylvatica) Wiltshire, UK.
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Mark Taylor / English / Pedunculate oak {Quercus robur} in autumn, UK.
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Chris O'Reilly / Scots pine, mature tree on hillside {Pinus sylvestris} Wester Ross, Scotland, UK