We went to Old Faithful on the last day in Yellowstone. It was so fun! Old Faithful erupts about every 60-110 minutes. It erupts 140 feet in the air, but has been known to erupt 190 feet. Old Faithful was named in 1870. It was the first geyser to receive a name. The water temperature was 244 F°, proving that the geyser really lives up to it’s name.
How does it erupt? (no searching online)