Skip to main content
U.S. flag

An official website of the United States government

geothermal monitoring.jpg

November 2021 (approx.)

Detailed Description

Photo of the drone performing a low-altitude gas survey to monitor gas emissions near Mammoth Lakes, CA. In the foreground (the white outcrops) is a fumarole. The dead trees in the background are due to tree-kill from heated ground temperatures

Sources/Usage

Public Domain.