How was old faithful formed?

Old Faithful was created by a hot spot.


Old Faithful is the world's most famous geyser. Situated in yellowstone-national-parks Upper Geyser Basin, it was given its name by members of the washburn, langford, doane expedition because of its predictable eruptions, every 60-90 minutes. Each eruption lasts 1.5-5 minutes, expelling some 3,700-8,400 gallons of boiling water (14,000-32,000 liters) in a narrow jet stream.


Old Faithful facts:

  • Each eruption lasts one and a half to five minutes.
  • When it erupts, it sprays 3,700 to 8,400 gallons (14,000 to 32,000 liters) of boiling water up to 184 feet (55 m) in the air.
  • Old Faithful has rarely missed an eruption in over 120 years of recorded history
  • Old Faithful is one of more than 300 geysers in Yellowstone.
  • Old Faithful is a cone geyser, named for the cone-shaped mineral formation around its opening that makes it erupt in a narrow jet.