An HVO geologist collects a suite of fissure 8 channel samples to perform densit
![image related to volcanoes. See description](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/img7170.jpeg?itok=Gj2IxzYE)
Detailed Description
An HVO geologist collects a suite of fissure 8 channel samples to perform density measurements. USGS photo by M. Zoeller.
Sources/Usage
Public Domain.