Sarah Henton and Melissa Pfeffer trying to collect samples "black scum" that floats on the surface of the main pool at Shrub mud volcano.  Temperature on this day was 44.1°C; about 5°C higher than in 2005.

Sarah Henton and Melissa Pfeffer trying to collect samples "black scum" that floats on the surface of the main pool at Shrub mud volcano. Temperature on this day was 44.1°C; about 5°C higher than in 2005.

Date: Jul 15th, 2009
Volcano(es): Klawasi Group Shrub
Photographer: McGimsey, R. G.
URL: avo.alaska.edu/image/view/32152
Image courtesy of AVO/USGS.
Please cite the photographer and the Alaska Volcano Observatory / U.S. Geological Survey when using this image.
Full Resolution.