Grand Geyser, Hydrothermal fountain in Upper Geyser Basin, Yellowstone National Park, United States.
Grand Geyser produces multiple water bursts during each eruption cycle, sending columns of heated water to heights of 200 feet in the mountain air.
Ferdinand Vandeveer Hayden documented and named this natural water feature during his geological expedition of the Yellowstone region in the nineteenth century.
Scientists and researchers study the microorganisms living in the mineral-rich waters of Grand Geyser to understand life in extreme temperatures.
Visitors need to check eruption predictions at the nearby Old Faithful Visitor Center and arrive 30 minutes early to secure viewing positions.
The tallest predictable geyser globally maintains water temperatures of 163 degrees Fahrenheit and releases between one to four bursts per eruption cycle.
Location: Teton County
GPS coordinates: 44.46668,-110.83698
Latest update: May 13, 2025 14:21
Geysers represent Earth's geological forces through their regular water eruptions. From Yellowstone to Kamchatka, these thermal springs display our planet's underground activity. The fountains reach heights of several meters and generate steam columns at regular intervals.
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