Yellowstone - Fantastic Journeys

Catch a Geyser

Old Faithful isn't faithful. It sprouts about once every 80 minutes. But the interval between eruptions ranges from 45 to more than 100 minutes, depending on how long and how high the geyser sprayed the last time. You don't have to wait, though! Click the geyser to trigger your own eruption with this video. You will need the free Windows Media Player plugin.

Old Faithful
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