Alaska Volcano Observatory

Steaming from the summit crater at Mount Spurr is visible during an overflight on May 14, 2024. The steam source is a fumarole (steam vent) inside of the summit crater, which is snow-free and yellowish, due to sulfur precipitating from the plume. Photograph is taken looking toward the south.

Credit: Image courtesy of AVO/USGS.
Use Restriction: Please cite the photographer and the Alaska Volcano Observatory / U.S. Geological Survey when using this image.
Full Resolution.