The Largest Hot Spring in the United States

Grand Prismatic Spring located in Yellowstone National Park is the largest hot spring in the United States and the third largest in the world after Frying Pan Lake in New Zealand and Boiling Lake in Dominica.  With a diameter of 370 feet (90 m.) and 121 (50 m.) feet depth,  Grand Prismatic Spring discharges 560 US gallons (2,100 L) water per minute, reaching 60 °F (70 °C) temperature.

The magnitude of this spring is earth-shattering, notwithstanding the colourful and vivid rings around the deep blue water grabbed our attention the first. Yellowstone National park explains, “The vivid rings of rusty reds and vibrant yellows and greens that encircle it are caused by colonies of pigmented thermophiles — microbes that live within specific extreme temperature ranges at hot springs. The bands of color correspond to the microbes’ grades of tolerance. Where one kind of colony reaches its temperature threshold, another type immediately takes over.”

“Neon-like” colours, crystal-clear boiling water and beautifully shaped layers – it looks like a paradise in the Hell.


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