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U.S. Postal Commemorative, Jefferson National Expansion Memorial
St. Louis, Missouri
Steamboat, a popular attraction in Yellowstone National Park, is the world’s tallest active geyser. At unscheduled intervals, it sends rockets of water soaring as high as 300 feet or more, though minor eruptions of 10 to 40 feet are more common.
Wonders of America: Land of Superlatives Stamp Series@2005 United States Postal Service. All rights reserved. Used with Permission.
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Image courtesy of S. Rooney, GVCC. Another wonderful geyser in Yellowstone is “Old Faithful”. Looks like I’ll have to go back and get a nice image of Steamboat Geyser as well!