Old Faithful, named by members of the 1870 Washburn Expedition, was once called “Eternity’s Timepiece” because of the regularity of its eruptions. Despite the myth, this geyser has never erupted at exact hourly intervals, nor is it the largest or most regular geyser in Yellowstone. It does, however, erupt more frequently than any other of the large geysers.
Expect Old Faithful to erupt with intervals between 35 minutes to two hours. Your best gauge of when to expect the next eruption is to watch the crowds. When crowds form in the web cam view, then you know it's soon to erupt.
This view of the Old Faithful Geyser is captured from a webcam inside the visitor education center.
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