Giantess Geyser is a fountain-type geyser in the Upper Geyser Basin of Yellowstone National Park

Yellowstone National Park

Yellowstone National Park, established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872, is a national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho...

. It is known for its violent and infrequent eruptions of multiple water bursts that reach from 100 to 200 ft (30.5 to 61 m). Eruptions generally occur 2 to 6 times a year. The surrounding area may shake from underground steam explosions just before the initial water and/or steam eruptions. Eruptions may occur twice hourly, experience a tremendous steam phase, and continue activity for 4 to 48 hours.

History

Giantess Geyser was one of the seven geysers named during the Washburn–Langford–Doane Expedition to the park region in 1870. Walter Trumbull

Walter Trumbull

Walter H. Trumbull, Jr. was an American football player. He attended Middlesex School in Concord, Massachusetts before enrolling at Harvard University. He played at the tackle and center positions for Percy Haughton's Harvard Crimson football from 1912 to 1914...

, a member of the expedition described Giantess in his diary:


Nathaniel P. Langford

Nathaniel P. Langford

Nathaniel Pitt Langford was an explorer, businessman, bureaucrat, vigilante and historian from St. Paul, Minnesota who played an important role in the early years of the Montana gold fields, territorial government and the creation of Yellowstone National Park.-Montana Gold Fields:On June 16, 1862...

 in his Diary of the Washburn Expedition to the Yellowstone and Firehole Rivers in 1870 described the Giantess thus: