description Black Growler fumarole Overview
Black Growler is a high-temperature fumarole in the Porcelain Basin area of Norris Geyser Basin, Yellowstone National Park. Rather than erupting liquid water like a geyser, it vents steam and volcanic gases from the ground, producing a persistent roaring or growling sound. Norris is among Yellowstone's hottest and most dynamic hydrothermal areas, and Black Growler illustrates how underground heat can convert limited groundwater directly into steam.
help Black Growler fumarole FAQ
Where is the Black Growler fumarole located?
The Black Growler is a high-temperature fumarole located in the Porcelain Basin area of the Norris Geyser Basin in Yellowstone National Park. Norris Geyser Basin is known as the hottest and most active thermal area in Yellowstone.
What is a fumarole?
A fumarole is a vent in the Earth's crust that emits steam and volcanic gases rather than erupting liquid water like a geyser. The Black Growler specifically vents superheated steam and volcanic gases that produce a loud, persistent roaring or growling sound.
How hot is the Black Growler?
Fumaroles in the Norris Geyser Basin can reach extremely high temperatures, and Black Growler is no exception. Steam venting from the ground in this area has been recorded at temperatures well above the boiling point of water.
What gases does the Black Growler release?
The Black Growler primarily vents a mixture of superheated water vapor (steam) and volcanic gases. These gases often include hydrogen sulfide, which gives the area its characteristic "rotten egg" smell.
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