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National Park - Grotto Geyser
of sign - Upper Geyser Basin near Old Faithful in Yellowstone National Park
taken June 2008
view of sign
view of sign
is perhaps the most unusual of Yellowstone's geysers. Geologists
believe that hundreds (or thousands) of years ago, Grotto
emerged in a stand of dead or dying trees and through time, deposited layer
upon layer of siliceous sinter (silica) over the
initial eruption can reach heights of more than 40 feet, but then
generally subsides to about 15 feet.
duration of Grotto's eruption can vary from about fifty minutes to
more than 24 hours.
The unusually shaped cone of Grotto Geyser has long captured the
imagination of explorers, artists, and visitors. This woodcut
was developed for Nathaniel P. Langford's second article on
Yellowstone in Scribner's magazine in June, 1871.
exhibit made possible by a generous grant from the Yellowstone Association.
on the sign
addition to the text there is a picture of Grotto Geyser erupting and a
picture of a woodcut illustration from Scribner's Magazine
Geyser from 1871.
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