Located within the Lower Geyser Basin, "Great Fountain Geyser experiences periods of irregularity. For the most part, it is dependable. Eruptions average 100 feet (31 m) high, with some rare “superbursts” of 200 feet (61 m) or more. Eruptions last 45-60 minutes in a series of bursts. Great Fountain Geyser takes 10-14 hours to rebuild to an eruption. The pool slowly fills, then begins to overflow 70-100 minutes before the eruption."
A Quiescent Great Fountain Geyser, Yellowstone National Park
Rebecca Latson
Friday, March 18, 2022
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