Montana-Wyoming 2011 - July 16, 2011 - Yellowstone - A diverse environment
July 16th 2011 The other reason for visiting Yellowstone is to view the astonishing geographic/geologic features. Although Old Faithful is the very icon of Yellowstone, it represents only one aspect of the park. Yellowstone sits atop an ancient caldera, one which has blown up catastrophically about every 640,000 years, the last time being about 640,00 years ago. For comparison, the Lava Creek supereruption about
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