What is Old Faithful Geyser?
:''There is also a regularly-erupting geyser named Old Faithful near [[Calistoga, California]].'' [[File:Old Faithfull-pdPhoto.jpg|thumb|right|200px|Old Faithful Geyser during an eruption]] '''Old Faithful''' is a cone [[geyser]] in [[Yellowstone National Park]] in [[Wyoming]], in the [[United States]]. Old Faithful was named in 1870 and was the first geyser in the park to get a name.<ref>{{cite book | author=Bauer, Clyde Max | title=Yellowstone Geysers | location=Yellowstone Park, Wyoming | publisher=Haynes, Inc | year=1947 | id=ASIN B0007E44C4}}</ref><ref name=tour /> == Eruptions == Eruptions can shoot 3,700 to 8,400 [[U.S. gallon]]s (14–32&nbsp;[[Kilolitre|kL]]) of boiling water to a height of 106–184 feet (30–55&nbsp;m) lasting from 1.5 to 5 minutes. The average height of an eruption is 145 feet (44&nbsp;m).<ref>{{cite book | last=Chapple | first=Janet | title=Yellowstone Treasures | url=https://archive.org/details/yellowstonetreas0000chap_a3m6 | publisher=Granite Peak Publications | year=2005 | location=Providence, RI | page=[https://archive.org/details/yellowstonetreas0000chap_a3m6/page/79 79] | isbn=0-9706873-1-1 }}</ref> Eruptions often occur about 90 minutes away from each other, but this difference in time can range from 45 to 125 minutes on occasion.<ref name=gosa>{{cite web | title=Old Faithful | work=The Geyser Observation and Study Association | url=http://www.geyserstudy.org/geyser.aspx?pGeyserNo=OLDFAITHFUL | date=2007-09-20 | accessdate=October 7, 2007 | archive-date=2012-02-16 | archive-url=https://www.webcitation.org/65V0OnUJ0?url=http://www.geyserstudy.org/geyser.aspx?pGeyserNo=OLDFAITHFUL | url-status=dead }}</ref> More than 137,000 eruptions have been recorded. [[Harry M. Woodward]] first described the relationship between the [[duration]] and [[interval]]s of the eruptions in 1938).<ref>{{cite web |url=http://www.nps.gov/yell/historyculture/arch_interp.htm |title=Season Report on the Naturalist Activities at Old Faithful Station. |year=1939 |author=Harry R. Woodward}}</ref> Old Faithful