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. This view of the Old Faithful Geyser is captured from a webcam inside the visitor education center. At this location, time is not measured by a clock, but by this geyser. Visitors make decisions on when to eat, take a tour, interact with exhibits, or watch the visitor center film based on Old Faithful’s next eruption.