

YELLOWSTONE WINTER
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20050131_4470_YELLOWSTONE_WINTER_MAMMOTH_HOT_SPRINGS_THERMOPHILE_DETAIL.jpg
Detail of colorful, constantly changing patterns, is created by thermophiles ("heat lovers"), microscopic organisms reacting to heat, extreme heat ,and/or acid in the Lower Terraces Area, Mammoth Hot Springs, Yellowstone National Park, Wyoming, United States of America
© Maxine Cass