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National Park - Castle Geyser
of sign - Upper Geyser Basin trail in Yellowstone National Park
taken June 2008
view of sign
view of sign
massive cone is a sign of old age. Eruption after eruption,
probably for thousands of years, scalding water has deposited this
mineral formation. By contrast, Old Faithful's fledgling cone
may be only a few hundred years old.
Castle Geyser has dramatically changed its surroundings. By
flooding the area with hot silica-rich water, the geyser has
of a pine forest and turned it into a thermal desert. Tree
skeletons are entombed within the cone.
Geyser's eruptions are predictable; two per day are typically
Thomas Moran painted this watercolor in 1872. Vandalism has
since destroyed some of Castle Geyser's original symmetry.
Trumbull, a member of the Washburn expedition, sketched Castle
Geyser in 1870.
on the sign
addition to the text there is watercolor painting of Castle Geyser erupting
painted by Thomas Moran in 1872. There is also an
picture of Castle Geyser sketched by Washburn expedition member Walter
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