Gas sampling at Mount Shasta's summit fumarole

A scientist stands on a bare, rocky slope of a mountain, punching a steel tube into the ground with a glass sample bottle on top

Detailed Description

USGS scientist Sara Peek collects fumarole gas at Sulphur Springs near the summit of Mount Shasta as a part of CalVO’s long-term monitoring at very high threat volcanoes.


Image Dimensions: 480 x 640

Date Taken:

Location Taken: US


USGS photo by Lauren Harrison