Yellowstone National Park in Park County, Wyoming — The American West (Mountains)
When active, Giant Geyser is one of the largest in the world. Historic accounts describe Giantís eruptions soaring to heights of 250 to 300 feet. However, recent eruptions have ranged from 200 to 250 feet.
Giant Geyser displays cycles of activity and dormancy. The unpredictability of Giant is due, in part, to interconnections between it and the geysers and hot springs of the nearby Grotto Group.
ē Giant is a cone-type geyser.
ē When active, Giantís eruptions may reach heights of 200 to 250 feet.
ē Giantís eruptions can last from 1 to 1.5 hours and expel more than a million gallons of water.
Shrouded in Antiquity
The large sinter shroud surrounding Giantís vent may be an indication of the geyserís great age. The slow accumulation of mineral (1 to 2 inches every 100 years) indicates that Giant could be thousands of years old.
Erected by National Park Service.
Location. 44° 28.24′ N, 110° 50.45′ W. Marker is in Yellowstone National Park, Wyoming, in Park County. Marker can be reached from Lower Grand Loop Road (U.S. 287), on the left when traveling south. Touch for map. Marker is located in the Upper Geyser Basin in Yellowstone National Park.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Grotto Geyser (about 500 feet away, measured in a direct line); Daisy Geyser (approx. 0.2 miles away); Riverside Geyser (approx. 0.2 miles away); Beauty and Chromatic Pools (approx. 0.2 miles away); Fading Glory (approx. 0.3 miles away); Grand Geyser (approx. 0.3 miles away); Crested Pool (approx. half a mile away); Castle Geyser (approx. half a mile away). Touch for a list and map of all markers in Yellowstone National Park.
More about this marker. A photograph of an erupting Giant Geyser is on the left side of the marker. An 1870s watercut of Giant Geyser appears on the right side of the marker.
Categories. • Natural Features •
Credits. This page was last revised on June 16, 2016. This page originally submitted on September 8, 2015, by Bill Coughlin of North Arlington, New Jersey. This page has been viewed 162 times since then and 43 times this year. Photos: 1, 2, 3, 4, 5. submitted on September 8, 2015, by Bill Coughlin of North Arlington, New Jersey.