USGS geologist David Johnston (red circle) sampling fumarole at the...

USGS geologist David Johnston (red circle) sampling fumarole at the...

Detailed Description

USGS geologist David Johnston (red circle) sampling fumarole at the crest of the "bulge". Image taken from hovering helicopter.

Details

Image Dimensions: 600 x 403

Date Taken:

Source:


unknown USGS photographer