Lion Geyser
Lion Geyser is a cone-type geyser in the Upper Geyser Basin of Yellowstone [National Park] in the United States. It is located in the Geyser Hill complex.
It was named for the roaring sound of steam releasing during an eruption. Eruptions can reach and last from 1 to 7 minutes. Lion is the largest of the Lion Group which includes Little Cub Geyser and the currently inactive Big Cub and Lioness geysers.