People watch as Old Faithful erupts in Yellowstone National Park, Wyoming, USA. In the days surrounding when this image was taken, the geyser averaged an eruption about every 90 minutes, though occasionally there were hours between eruptions.
People watch as Old Faithful erupts in Yellowstone National Park, Wyoming, USA. In the days surrounding when this image was taken, the geyser averaged an eruption about every 90 minutes, though occasionally there were hours between eruptions.
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