YNP Thermal Feature: Lion Geyser

Thermal Map; Firehole River Drainage (Map) -> Upper Geyser Basin (Map) -> Geyser Hill Group -> Lion Geyser


Enlarge		Credit: NPS

Approximate Location of Lion Geyser:

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Lion Geyser
YNP Thermal Inventory ID: UGH003
Lat: 44.4640243
Lon: -110.8309603
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The Lion Group consists of four geysers: Lion, Lioness, Big Cub, and Little Cub, which are all connected underground. Of these Lion has the largest cone and eruptions. Active phases normally occur each day. Eruptions of Lion Geyser can be as high as 50 feet (15 m) for 1 - 7 minutes and are often preceded by sudden gushes of steam and a deep roaring sound, hence the name Lion.

*Adapted from the NPS Old Faithful Area Trail Guide and the Old Faithful Area Interactive Map

Data Available:

YNP Thermal Inventory Data

Date	Description	pH	Temp (°C)	Vent Temp (°C)	Conductance (µmhos/cm)
09/29/1998	very large cone	9.14	92.1	0	2400

*Indicates an unofficial name

Note: The YNP RCN is working closely with the YNP Spatial Analysis Center to provide the most accurate and up-to-date information on geothermal features, however, errors do exist. Any questions or concerns regarding features found on this site should be directed to the YNP RCN before contacting the Spatial Analysis Center.