ocr: Old Faithful Geyser About Yellowstone Nafl.Park The ,200,00U-acre 898,000- hectare) park is the nation's first and largest national park, as well as the largest wildlife preserve in the United States. rellowstone's landscape, with its canyons, lakes and watertalls, was shaped by the action - of volcanoes and glaciers. The park's greatest attractions are its 10,000 geysers, many of which erupt to heights of 100 feet (30 m) or: more!
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