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Patterns in Nature: Trees
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Photo: Stand of aspen trees
Photo: Close-up view of papery birch barkPhoto: Cottonwood tree barkPhoto: Close-up of eucalyptus barkPhoto: Stand of aspen treesPhoto: Weathered bark of a foxtail pinePhoto: Termite tunnels crisscrossing tree trunksPhoto: Close-up of knotted aspen barkPhoto: Grove of aspen treesPhoto: Mottled sycamore barkPhoto: Whitebark pine trees
ENLARGEWALLPAPER
Aspen trees in autumn, Sierra Nevada Mountains, California
Photograph by Roy Toft

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