Giantess Geyser, Fountain geyser in Upper Geyser Basin, Yellowstone National Park, Wyoming, US.
Giantess Geyser features a large deep pool with boiling water at its center and thin sinter deposits lining the edges of the pool.
During the Washburn-Langford-Doane Expedition of 1870, Walter Trumbull documented the geyser's characteristics and eruption patterns in detail.
Scientists and visitors gather data about the geyser's temperature, pH levels, and conductivity to understand the complex geothermal systems of Yellowstone.
The geyser erupts between two to six times annually, with water columns reaching heights of 200 feet and eruptions lasting from 4 to 48 hours.
Before each eruption, the ground surrounding the geyser experiences noticeable tremors from underground steam explosions at depths of several kilometers.
Location: Wyoming
GPS coordinates: 44.46350,-110.82900
Latest update: March 4, 2025 08:28
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