Giantess Geyser is located in the Upper Geyser Basin of Yellowstone. Giantess erupts very infrequently. Usually not more than two or three times a year. It usually has a duration of hours to days. Giantess often erupts to a hieght of 200 feet or more.

Giantess Geyser:

Giantess movie (0.8 Mb, 15 sec)

Giantess Geyser with a rainbow:

Images copyright 1998, Mas Hayakawa. All rights reserved.