One of the best-known geysers in Yellowstone National Park. Its eruptions occur every 33 to 90 minutes and last about four minutes, sending up a column of hot water and steam that rises 116 to 175 feet (35.4 to 53.4 m).
Pronunciation
Old Faithful
/əo͝oldˈfāTHfl//əʊldˈfeɪθfl/
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