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Old Faithful geyser erupts at Yellowstone National Park as a young bison grazes nearby. The famous geyser erupts at an average interval of 90 mins, expelling up to 8,400 gallons of boiling water at up to 184 feet high.
Grand Prismatic Spring in Yellowstone National Park in Wyoming, USA
Norris Geyser Basin, Yellowstone, Wyoming - United States of America
grand prismatic spring
Grand Prismatic Spring, Yellowstone's largest hot spring, is the largest in the United States and the third largest in the world.
Close-up of grand prismatic spring at sunny blue sky, , Yellowstone National Park, USA.
Cliff Geyser on Iron Spring Creek at Black Sand Basin on Upper Geyser Basin in Yellowstone National Park, Wyoming
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.
Norris Geyser Basin at Yellowstone National Park
Yellowstone National Park
The world's most famous geyser, Old Faithful, remains true to name and erupts.
Black Diamond Pool Geysers at Yellowstone National Park. Biscuit basin trail.
Panoramic extremely colorful Grand Prismatic Springs from a distance with bright blue sky and light steam lifting off lake of rainbow colors
Old Faithful Yellowstone National Park, Wyoming, USA.
Hot springs spewing steam while the sun sets over Norris Geyser Basin
Thermophilic Microbial Mat at Sapphire Pool in Biscuit Basin of Yellowstone National Park, Wyoming
Fumarole and geyser environment in Yellowstone National Park
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.
Natural hot springs Yellowstone of natural pools natural wonder beautiful
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA
Grand Prismatic Spring in Yellowstone National Park, Wyoming USA from the view of Fairy Falls Trail, horizontal
Orange-blue Colored Black Sand Basin lake in Yellowstone National Park, Wyoming, USA.Nikon D3x
beautiful blue hot spring thermal pool, called Opal Pool, in the Midway Geyser Basin of Yellowstone National Park, Wyoming, USA
Cliff Geyser at Black Sand Basin in Yellowstone National Park.
A beautiful shot of the sprouting old faithful geyser in Yellowstone National Park
Beauty Pool view of Old Faithful Geyser Erupt in Yellowstone National Park, Wyoming, USA.
colorful landscape of the midway geyser basin area of yellowstone national park.
Majestic rural landscape
Grand Prismatic Spring, Yellowstone National Park, Wyoming
Porcelain Basin spans about one square mile and is renowned for its otherworldly, stark white landscape created by siliceous sinter deposits. It is one of the most active geothermal areas in the park, featuring numerous geysers, hot springs, and fumaroles, with temperatures often exceeding 200°F (93°C). Its colours are caused by  thermophilic (heat-loving) microorganisms including various types of bacteria and algae. Cyanobacteria, for instance, contribute blues and greens, while different species of archaea and bacteria create reds, yellows, and oranges. The colors are also influenced by the mineral content of the water, such as iron, sulfur, and silica, which can form colorful mineral deposits and runoff channels.
Free Images: "bestof:FountainPaintPotsMap-Fountain Paint Pot.JPG Fountain Paint Pots Lower Geyser Basin Yellowstone National Park Wyoming Screen captured from NPS website http //www"
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