Young Hopeful Geyser is a geyser

Geyser

A geyser is a spring characterized by intermittent discharge of water ejected turbulently and accompanied by a vapour phase . The word geyser comes from Geysir, the name of an erupting spring at Haukadalur, Iceland; that name, in turn, comes from the Icelandic verb geysa, "to gush", the verb...

 in the Lower 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...

 in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

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Young Hopeful Geyser is part of the Black Warrior Group which includes Artesia Geyser

Artesia Geyser

Artesia Geyser is a geyser in the Lower Geyser Basin of Yellowstone National Park in the United States. Artesia Geyser is part of the Black Warrior Group which includes Young Hopeful Geyser, Gray Bulger Geyser, and Steady Geyser.- Geology :...

, Gray Bulger Geyser, and Steady Geyser. Young Hopeful is a collection of several vents which, depending on the seasonal water table, erupt either continuously or intermittently. The vent nearest Firehole Lake have gone dormant while the ones near the boardwalk trail have become more active. The two largest vents often reach about 2 foot (0.6096 m) but sometimes surge to 6 feet (1.8 m).