Great Fountain Geyser at Lower Geyser Basin Yellowstone National Park. The Lower Geyser Basin possess a large variety of thermal features, including mud pots, geysers, pools, springs, and fumaroles. This is one of the grand geysers of Yellowstone. It has the distinction of having the first written description recorded by the 1869 Folsom-Cook Expedition. But it remained unnamed until the 1872 Hayden Survey. The intricately terraced sinter cone is 150 feet in diameter with a 14x20 foot crater.
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