Tim Laman / A rainforest tree with large buttresses. Gunung Palung National Park, Borneo, Indonesia.
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Mike Read / Rock split by growth of ancient tree. Parc Naturel Regional de Corse, Corsica, France, April.
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John Cancalosi / Petrified trees (Araucarioxylon arizonicum) from the Triassic period 200-250 million years ago, Petrified forest National Park, Arizona, August 2010