Shell Spring Photos

Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground.  Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes.  While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin, Yellowstone National Park, Wyoming
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground. Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13426  
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground.  Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes.  While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin, Yellowstone National Park, Wyoming
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground. Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13418  
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground.  Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes.  While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin, Yellowstone National Park, Wyoming
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground. Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13420  
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground.  Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes.  While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin, Yellowstone National Park, Wyoming
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground. Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13421  
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground.  Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes.  While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin, Yellowstone National Park, Wyoming
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground. Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13425  
Castle Geyser (during steam phase, not eruption) with the colorful bacteria mats of Tortoise Shell Spring in the foreground. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin, Yellowstone National Park, Wyoming
Castle Geyser (during steam phase, not eruption) with the colorful bacteria mats of Tortoise Shell Spring in the foreground. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13427  
Tortoise Shell Spring bubbles in front of the sinter cone of Castle Geyser.  Upper Geyser Basin, Yellowstone National Park, Wyoming
Tortoise Shell Spring bubbles in front of the sinter cone of Castle Geyser. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13428  
Tortoise Shell Spring bubbles in front of the sinter cone of Castle Geyser.  Upper Geyser Basin, Yellowstone National Park, Wyoming
Tortoise Shell Spring bubbles in front of the sinter cone of Castle Geyser. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13429  
Tortoise Shell Spring bubbles in front of the sinter cone of Castle Geyser.  Upper Geyser Basin, Yellowstone National Park, Wyoming
Tortoise Shell Spring bubbles in front of the sinter cone of Castle Geyser. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13430  
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground.  Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes.  While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin, Yellowstone National Park, Wyoming
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground. Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13437  
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground.  Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes.  While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin, Yellowstone National Park, Wyoming
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground. Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13443  
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground.  Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes.  While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin, Yellowstone National Park, Wyoming
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground. Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13444  
Shell Spring (Shell Geyser) erupts almost continuously.   The geysers opening resembles the two halves of a bivalve seashell, hence its name.  Biscuit Basin, Yellowstone National Park, Wyoming
Shell Spring (Shell Geyser) erupts almost continuously. The geysers opening resembles the two halves of a bivalve seashell, hence its name. Biscuit Basin.
Location: Biscuit Basin, Yellowstone National Park, Wyoming
Image ID: 13498  
Shell Spring (Shell Geyser) erupts almost continuously.   The geysers opening resembles the two halves of a bivalve seashell, hence its name.  Biscuit Basin, Yellowstone National Park, Wyoming
Shell Spring (Shell Geyser) erupts almost continuously. The geysers opening resembles the two halves of a bivalve seashell, hence its name. Biscuit Basin.
Location: Biscuit Basin, Yellowstone National Park, Wyoming
Image ID: 13499  
Sinter cone of Castle Geyser, estimated to be 5,000 - 15,000 years old.  Tortoise Shell Spring in foreground. Upper Geyser Basin, Yellowstone National Park, Wyoming
Sinter cone of Castle Geyser, estimated to be 5,000 - 15,000 years old. Tortoise Shell Spring in foreground. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 07211  
Sinter cone of Castle Geyser, estimated to be 5,000 - 15,000 years old.  Tortoise Shell Spring in foreground. Upper Geyser Basin, Yellowstone National Park, Wyoming
Sinter cone of Castle Geyser, estimated to be 5,000 - 15,000 years old. Tortoise Shell Spring in foreground. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 07212  
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