Blue thermal spring in Yellowstone

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Geothermal Spring — Blue, Natural, Afternoon

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Steamy geothermal pool in Yellowstone

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Sunset over geothermal landscape

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Sunset at geothermal area

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sunset over geothermal pools

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Sunset over geothermal pools

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Sunset over geothermal area

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Sunset over geothermal pools

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Blue thermal pool in Yellowstone

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Steam rising over a geothermal lake

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Sunset over geothermal basin

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