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National Park - Giant Geyser
of sign - Upper Geyser Basin near Old Faithful in Yellowstone National Park
taken June 2008
view of sign
view of sign
When active, Giant Geyser is one of the largest in the world. Historic
accounts describe Giant's eruptions soaring to heights of
to 300 feet. However, recent eruptions have ranged from 200 to 250
Geyser displays cycles of activity and dormancy. The unpredictability
of Giant is due, in part, to interconnections between
and the geysers and hot springs of the nearby Grotto Group.
is a cone-type geyser.
active, Giant's eruptions may reach heights of 200 to 250 feet.
eruptions can last from 1 to 1.5 hours and expel more than a million gallons
Shrouded in Antiquity
large sinter shroud surrounding Giant's vent may be an indication of the
geyser's great age. The slow accumulation of mineral
to 2 inches every 100 years) indicates that Giant could be thousands of years
exhibit made possible by a generous grant from the Yellowstone Association.
on the sign
addition to the text there is a picture of Giant Geyser erupting and a
picture of a 1870's woodcut of Giant Geyser.
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