Larry Mastin
![Man with brown hair and white beard smiling with a lake in the background.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/Larry%20Mastin_0.jpeg?itok=PmZFhfK-)
Detailed Description
Larry Mastin is a geologist with the Cascades Volcano Observatory who studies the distribution of volcanic ash.
Sources/Usage
Public Domain.
Larry Mastin is a geologist with the Cascades Volcano Observatory who studies the distribution of volcanic ash.
Public Domain.