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Castle Geyser, a famous thermal feature, erupts in Yellowstone's Upper Geyser Basin not far from Old Faithful Geyser. Heated water run off produces colonies of colorful thermophilic organisms as seen in the foreground.
Castle Geyser was named in 1870 by the Washburn-Langford-Doane Expedition due to its striking resemblance to the ruins of a castle. It has one of the oldest and largest sinter cones in Yellowstone, indicating that it has been active for thousands of years.
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.
Erupting Castle Geyser at Upper Geyser Basin, Yellowstone National Park, Wyoming, USA
Horizontal black and white shot of tourists in the late 1940s watching Old Faithful erupt.
Grand Geyser Eruption in Winter\nYellowstone National Park
Old Faithful Geyser in Yellowstone National Park
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.
Castle Geyser was named in 1870 by the Washburn-Langford-Doane Expedition due to its striking resemblance to the ruins of a castle. It has one of the oldest and largest sinter cones in Yellowstone, indicating that it has been active for thousands of years.
Eruption of the Castle Geyser inside the super volcano in Yellowstone National park with a beautiful rainbow. Located in the state of Wyoming, United States of America (USA).
Old Faithful geyser spouting steam in the air.\n\nTaken in Yellowstone, National Park, Wyoming USA
Yellowstone National Park -  Old Faithful Starting to Erupt - 1981. Scanned from Kodachrome slide.
Thermal area of limestone and travertine formations in Yellowstone National Park
Ski touring in the yellowstone backcountry winter 1985
Castle Geyser Eruption in Winter \nYellowstone National Park
Old Faithful Geyser erupting in winter snow
Yellowstone National Park’s thermal features can be seen as the product of millions of years of geology at work.  Geysers are hot springs that erupt periodically. The eruptions is the result of super-heated water below-ground becoming trapped in channels leading to the surface.
Erupting geyser at Lower Geyser Basin, Yellowstone National Park, Wyoming, USA
Geyser near Old Faithul Geyser at Yellowstone national Park.
Yellowstone National Park Tortoise Shell Spring Castle Geyser. Steaming Tortoise Shell Spring with famous Castle Geyser in the background inside Yellowstone National Park under blue summer Skyscape. Yellowstone National Park, Wyoming, USA, North America
Ski touring in the yellowstone backcountry winter 1986
Castle Geyser in Upper Geyser Basin of Yellowstone National Park.
A breathtaking volcanic and natural spectacle - Firehole lake drive - Scenic Landscapes of Geothermal activity of Yellowstone National Park, USA
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.
Castle Geyser Yellowstone National Park - August 1993.  Scanned from Kodachrome slide.
Steamboat Geyser in Yellowstone in Winter\nSteamboat Geyser is the world’s tallest active geyser. Its major eruptions shoot water more than 300 feet (91 m) and last from 3 to 40 minutes
Old Faithful Geothermal geyser in winter Yellowstone National Park
Thermal area in Yellowstone National Park
Free Images: "bestof:...Castle Geyser Cove, Yellowstone National Park," Wyoming, 1933 - 1942 - NARA - 519992.jpg Local identifier 79-AA-T02 Department of the Interior National Park"
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