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JoanRoca: Madison River
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JoanRoca: Al lado de Fishing Bridge
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JoanRoca: Yellowstone River
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JoanRoca: Lower Falls in Grand Canyon of Yellowstone
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JoanRoca: Sunset at Madison River
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JoanRoca: Storm near Tower
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JoanRoca: Uno de los carteles situados en las entradas al parque
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JoanRoca: Runoff entering the Firehole River
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JoanRoca: Extraña tormenta sobre el lago Yellowstone
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JoanRoca: Tormenta sobre el lago Yellowstone
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JoanRoca: Tormenta sobre Yellowstone Lake
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JoanRoca: Fountain Paint Pot
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JoanRoca: Upper Yellowstone Falls
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JoanRoca: Lower Yellowstone Falls
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JoanRoca: Lower Yellowstone Falls