Photographs of Upper Geyser Basin, Yellowstone National Park

Giant Geyser is so named both because of its cone - at ten feet tall and broad the largest in the Upper Geyser Basin, and on account of its spectacular eruptions which can last one hour, sending great plumes of water to a height of 250 feet (second only to Steamboat Geyser in the Norris Basin). Activity is variable and unpredictable, however, and a year may pass with no significant eruptions, while other times may see one or two eruptions per week. The geyser sits about half way, 100 feet, between the loop trail and the Firehole River, and is viewed from a little spur off the main path.

Back to map of the Upper Geyser Basin

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