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USA 2012
Yellowstone National Park
Lake Yellowstone
Mud Volcano Area
Group
West Thumb Geyser Basin
Mud Volcano Area
Group
Heyden Valley
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or click the thumbnails for the large photos
Yellowstone River
Mud Geyser
Sour Lake
Group
West Thumb Geyser Basin
Group
Heyden Valley
© 2012 Dirk S. Grossmann