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Forest trail among redwood trees

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Single Pine Tree in Fog

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Moss-covered Tree Stump — Green, Dark

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Blue Flower Field with Tree

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Red Maple Leaves — Serene, Autumn, Photograph, Tree Branch, Sky

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Brown Tree Frog — Dramatic

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Milky Way over Joshua Tree

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Grassy field with a dead tree

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Ancient Bristlecone Pine

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White Egrets on Branches

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Moss-covered Tree Stump — Green, Serene, Morning, Photograph

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Giant Tree in Mist — Gray

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Owl in Tree Hollow — Brown, Alert, Photograph, Tree Bark

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White Bear in Tree — Green, Natural, Photograph, Forest

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Radio Telescopes in Field — Green

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Research Huts on Glacier

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Tree Growing Through Archway — Green

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Ancient Oak Tree — Sepia

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abandoned research lab

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Climbing an ice wall

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Polar bear near research station

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Tornado research vehicle in field

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Red Maple Leaves — Serene, Autumn, Photograph, Trees, Branches

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Climbers on a snowy mountain

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