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4.0
46 votes

Old Faithful

Yellow Stone National Park, Mammoth, Wyoming 82190 USA

$$
$$$$
Reasonable
  • Credit Cards
    Accepted
  • Pet Friendly
  • Not Wheelchair
    Accessible
  • Public
    Restrooms
  • Outdoor
    Seating
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Heads up!

Due to the spread of COVID-19, some points of interest may be closed or have restrictions. Please stay safe and call ahead to get the latest information.

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“There she blows!”

Old Faithful is perhaps the most studied and predicted geyser. Mathematicians, statisticians, and dedicated observers have analyzed it for many years. For example, a direct relationship exists between the duration of Old Faithful's eruption and the length of the following interval. Short eruptions (around 2 minutes) lead to short intervals (about 65 minutes), long eruptions (4 minutes or so) lead to long intervals (about 94 minutes). During a short eruption, less water and heat are discharged, thus, they rebuild again in a short time. Longer eruptions mean more water and heat are discharged and they require more time to rebuild. As of August 2002, the average interval was 94 minutes.

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Old Faithful

Yellow Stone National Park
Mammoth, Wyoming
82190 USA

Hours

  • Sun - Sat: 8:00 am - 8:00 pm

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  • Parking
  • Pets Allowed
  • Restrooms
  • Wifi
  • Wheelchair Accessible
  • Credit Cards Accepted
  • Outdoor Seating
See More Details (13)

Parking, Dining

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