Botryoidal Spring


Botryoidal Spring is a fountain-type geyser in the Lower Geyser Basin of Yellowstone National Park in the United States.
Botryoidal Spring is part of the White Creek Group, which includes A-0 Geyser and Spindle Geyser. As the name indicates, Botryoidal Spring was originally known as a hot spring. The term botryoidal refers to the subspherical, grape-like geyserite structures around the vent. In 1996, seismic activity resulted in the sparkling spring changing to an active geyser.
It erupts for about one minute. Intervals are 3 to 5 minutes. The fountain reaches a height of 10 feet.
Immediately after an eruption, the pool is quiet. With no warning, eruptions start with a broad, moderately noisy burst. Smaller bursting continues for less than a minute. Eruptions may start with a blue bubble, caused by a large steam bubble rising from below the water surface.