Castle Geyser, Cone geyser in Upper Geyser Basin, Yellowstone National Park, United States
Castle Geyser features a large geyserite cone structure that extends across the surrounding area with step-like terraces from the main vent point.
The formation of the sinter cone dates back to 1022 AD, as determined through carbon-14 dating methods conducted on the geological structure.
Members of the Washburn-Langford-Doane Expedition named this natural formation on September 18, 1870, based on its tower-like mineral deposits.
The geyser erupts every 14 hours, sending water up to 75 feet high for 20 minutes, followed by a steam phase lasting 30 to 40 minutes.
Scientific measurements at the base remain impossible due to the fragile sinter structure and the considerable height of the mineral cone.
Location: Teton County
GPS coordinates: 44.46364,-110.83653
Latest update: May 18, 2025 22:45
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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