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Yellowstone National Park sits on top of a dormant volcano and is home to more geysers and hot springs than any other place on earth. Wonders abound at this truly unique national park, from sites like the Yellowstone Grand Canyon to wildlife like America's largest buffalo herd, grizzly bears, and wolves.
Shrouded in Snow Fog and Steam Witches Basin is Full of boiling caldrons, hot gushing springs, fumeroles and vents.  Backcountry skiers enjoy Witch Creek splenders while staying the night and bathing in the hot stream Early March 1986.
Porkchop Geyser's name derives from its pork chop-shaped sinter mound. Measuring around 2 feet in diameter, the geyser was once a tranquil hot spring until 1971 when it began erupting intermittently. In 1989, it experienced a violent hydrothermal explosion, scattering debris over 200 feet away and significantly altering its appearance. In that year, a visitor named David Kirwan died after attempting to rescue his friend's dog from the hot spring.
Roaring Mountains in Yellowstone National Park
Old Faithful, Upper Geyser Basin, Yellowstone National Park, USA
Geothermal pool in winter Yellowstone National Park steaming
Hot springs and fumeroles at the edge of a steamy Boiling Springs Lake in Lassen Volcanic National Park, California, USA. Lens flare. Scanned kodachrome film, 1976.
Chinese Spring near Old Faithful geyser at dusk in Yellowstone National Park.
Norris Geyser Basin in Yellowstone in Winter
Special landscapes made with film camera in USA
Visitors get a close up view of one of more than 10,000 thermal features in Yellowstone. Research on heat-resistant microbes in the park’s thermal areas has led to medical, forensic, and commercial uses.
Yellowstone National Park -  Castle Geyser Wide View - 1981. Scanned from Kodachrome slide.
South Scalloped Spring is known for its beautifully scalloped edges and clear, blue water. This hot spring's distinctive scalloped formations are created by mineral deposits, which build up around the edge of the spring over time.
Yellowstone, Wyoming, USA - July 23, 1995: tourists awaiting the eruption of water and steam of the famous and regular Old Faithful Geyser.
A colourful and high contrast shot of a geothermal pool in Taupo in the north island of New Zealand.
Geothermal activity and colorful Bacteria mats of thermophilic microorganisms in the runoff of hot springs in Yellowstone National Park, Wyoming
Norris Geyser Basin in Yellowstone in Winter
The Great Plains meet the Rocky Mountains in Wyoming. The state is a great plateau broken by a number of important mountain ranges. In the northwest are the Absaroka, the Owl Creek, Wyoming, Gros Ventre, Wind River and the Teton ranges. In the north central are the Big Horns; in the northeast, the Black Hills; and in the southern portion of Wyoming, the Laramie, Medicine Bow and Sierra Madre ranges.
Thermal area of limestone and travertine formations in Yellowstone National Park
Ski touring in the yellowstone backcountry winter 1986
The Yellowstone National Park, USA - hot lakes and springs of amazing colors
Scenery at Upper Geyser Basin, Yellowstone National Park, Wyoming, USA
Geothermal pool in winter Yellowstone National Park
Castle Geyser Eruption in Winter \nYellowstone National Park
Special landscapes made with film camera in USA
Constant Geyser is known for its regular and consistent eruptions. Erupting approximately every 10 to 15 minutes, it shoots neutral-to-alkaline water, rich in chloride, to heights of up to 30 feet. The temperature of the erupted water is measured in the outlet channel, which carries much of the geyser's flow. Rapid temperature increases in this channel often indicate heightened activity, reflecting the geyser’s dynamic nature and frequent eruptions. It was first documented in the late 19th century.
Morning Glory Pool - Yellowstone - August 1993.  Scanned from Kodachrome slide.
Pamukkale Traventine a cross section. Abstract.
Free Images: "bestof:General view in the Shoshone Geyser basin. Yellowstone National Park. - NARA - 517230.jpg Scope and content General notes 517230 Local identifier 57-HS-635"
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