Over 98% Of Americans Can’t Identify These 40 US Landmarks
This geyser is predictable.

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While some geysers erupt unpredictably, Yellowstone National Park’s Old Faithful is as reliable as its name. The cone geyser erupts every 44 minutes to two hours — not quite accurate enough to set a watch to, but still pretty impressive.
Melina Mara/The Washington Post via Getty Images
Melina Mara/The Washington Post via Getty Images
This geyser is predictable.
- Morning Glory Pool
- Old Faithful
- Lone Star Geyser
- Mammoth Hot Springs
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