Hydrothermal system and water flow in the subsurface beneath Long V...
By Volcano Hazards Program
2007 (approx.)

Detailed Description
Hydrothermal system and water flow in the subsurface beneath Long Valley Caldera, California. Cartoon Illustration from USGS FS 2007-3045.
Sources/Usage
Public Domain.
Modified from Farrar et al., 2007