What is the most famous geyser in Yellowstone Park?

Old Faithful's fame is well deserved. The geyser has been erupting at regular intervals for as long as records exist, and it delights visitors from around the world with its eruptions of boiling water. These eruptions regularly reach more than 130 feet (40 meters) and typically last for several minutes.



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Old Faithful may be the most famous geyser in Yellowstone National Park — or anywhere, for that matter — but coming in a close second is Grand Geyser, the world's tallest predictable geyser. It's impressive, and two more geysers usually join in the eruption as well: Vent and Turban Geysers.

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Upper and Lower Yellowstone River Falls The most famous waterfall in Yellowstone National Park is the Lower Yellowstone River Falls with an impressive 308-foot drop. The Upper and Lower Yellowstone River Falls are popular tourist attractions in Yellowstone—for good reason.

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Old Faithful Geyser got its unique name in the 19th century because its eruptions were so regular and predictable. But during parts of the 13th and 14th centuries, the geyser did not erupt at all.

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Indeed, periods of decreased precipitation have been shown in modern times to result in less frequent eruptions of Old Faithful, and the new research indicates that severe, long-duration droughts can terminate eruptions. For now, Old Faithful remains just that—faithful, with eruptions occurring about every 90 minutes.

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