Global Volcanism Program | Image GVP-10662
The Sulfur Springs thermal area was the site of combustion and melting of sulfur deposits in 1994 that produced a sulfur flow over an area of about 1 km2, prompting reports of a volcanic eruption. Measured fumarole temperatures at Sulfur Springs have ranged between about 90 and 100 degrees Centigrade over the past century.
Photo by Paul Kimberly, 2002 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.