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derwiki: Big horned sheep in the Grand Tetons
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derwiki: Somber Yellowstone landscape
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derwiki: Castle Geyser erupting, Yellowstone National Park
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derwiki: River runs through geothermal features, Yellowstone National Park
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derwiki: Castle Geyser erupting, Yellowstone National Park
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derwiki: IMG_8368.jpg
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derwiki: IMG_8296.jpg
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derwiki: Pump the brakes!
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derwiki: Yellowstone geothermal landscape
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derwiki: Bison close-up
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derwiki: Grotto Geyser
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derwiki: Blue Sapphire Pool, Biscuit Basin, Yellowstone National Park
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derwiki: Bacteria pools
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derwiki: Bison break
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derwiki: Morning Glory Pool in the Upper Geyser Basin, Yellowstone National Park
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derwiki: Old Faithful
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derwiki: Bison on a ridge, Yellowstone
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derwiki: Steamy waterfall at Yellowstone
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derwiki: Grand prismatic spring at Yellowstone
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derwiki: Painted Pots
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derwiki: Two foxes watch two elk
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derwiki: Elk preserve
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derwiki: Abandoned farm buildings
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derwiki: Pat and Lindsey
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derwiki: Frozen lake in the mountains
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derwiki: River in Yellowstone
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derwiki: Yellowstone walkway
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derwiki: Yellowstone geothermal feature
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derwiki: Trevor and a Japanese news crew wait for the geyser
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derwiki: Grand prismatic spring at Yellowstone