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
Survey Date: September 29, 1998
Geographic Area: Firehole River Drainage
Thermal Region: Upper Geyser Basin
Thermal Complex: Geyser Hill Group
Ranger District Contact: Old Faithful District, Colleen Rawlings (307) 344-2701
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