NPS/Neal Herbert
Fumaroles come in all shapes and sizes. This collection of small vents issues into the outflow of Porcelain Springs, which passes below the boardwalks in the Norris Geyser Basin.
Sustained Sound
[Water bubbling and boiling]
The roar of steam from this unnamed fumarole speaks to the tremendous heat below the Norris Geyser Basin.
[Steam hissing and roaring]
Last updated: August 21, 2017
PO Box 168 Yellowstone National Park, WY 82190-0168
307-344-7381