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Hot springs are the most common hydro-thermal features at Yellowstone National Park.  They vary from frothing mocha-like boiling water to clear and calm pools of tremendous depth.
Thermophilic Microbial Mat at Sapphire Pool in Biscuit Basin of Yellowstone National Park, Wyoming
Norris Geyser Basin, Yellowstone, Wyoming - United States of America
Jackson, USA - September 4, 2010: Grand Teton National Park entrance sign with National Park Service logo. This park is a United States National Park located in northwestern Wyoming, south of Yellowstone National Park. The park is named after the Grand Teton, which, at 13,770 feet (4,197 m), is the tallest mountain in the Teton Range.
Beautiful thermal lake view in the Yellowstone National Park in Wyoming, USA
Close-up of grand prismatic spring at sunny blue sky, , Yellowstone National Park, USA.
View of geothermal geyser seen from Yellowstone National Park, Wyoming.
Bumpass Hell, the largest and most popular hydrothermal area, in Lassen Volcanic National Park, California
USA, Phenix, Arizona- November 17, 2019:  A sign saying \
Place Sign for Mammoth Hot Springs in Yellowstone National Park, Wyoming
Yellowstone National Park, Wyoming, USA - September 6, 2018 Sign at the South Entrance - welcomes visitors to the park with the Snake River in the background
Majestic Yellowstone lake
Grand Prismatic Spring in Yellowstone National Park with tourists viewing the spectacular natural scene
Information highway sign at northeast Yellowstone Tower junction in northwestern Wyoming, USA.
Grand Prismatic Spring in Yellowstone National Park Wyoming, horizontal
Utah, USA-September 10, 2011: The Yellow Stone National Park is one of the Natrual Wonders in the world. Here is the beautiful scenery of the National Park.
yellowstone national park - the emerald pool with bison roaming in background
Place Sign for Buffalo Paddock Picnic Area in Yellowstone National Park at Park County, Wyoming
Yellowstone park
Black Pool hot spring with Yellowstone Lake in the background
Firehole River from a bridge at the path through the area of the Upper Geyser Basin. Yellowstone National Park, Wyoming, USA.
Man on a boardwalk looking at Beauty Pool hot spring in Yellowstone National Park
Image of Boardwalk leading through hot spring terraces in Yellowstone winter
West Thumb geysers of hot turquoise springs from deep pools on the edge of Yellowstone Lake in Southern Yellowstone National Park , Wyoming, in the United States of America (USA)
Reno, Nevada, United States – January 10, 2021: The Ballardini Ranch Trailhead area is a parking lot and collection of hiking and biking paths maintained by the parks department in Reno.
Thermophilic Microbial Mat at Sapphire Pool in Biscuit Basin of Yellowstone National Park, Wyoming
Jemez Mountain Trail Scenic Byway near Valles Caldera, New Mexico
Flowing Creek in Autumn Through Mountain Valley - Scenic views during fall autumn colors.
Chromatic Pool Panorama, Yellowstone National Park, Upper Geyser Basin, Wyoming
Norris Geyser Basin in Yellowstone in Winter
Free Images: "bestof:Yellowstone National Park - NARA - 517255.tif Scope and content General notes 517255 Local identifier 57-HS-661 Department of the Interior General Land Office U"
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