An HVO geologist checks Mauna Loa monitoring equipment
By Mauna Loa
![Color photograph showing a geologist in a yellow shirt working on a web camera at the summit of a volcano](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/img4270.jpg?itok=9GMwqpvZ)
Detailed Description
An HVO geologist performs a routine check of the thermal camera and webcam at the summit of Mauna Loa.
Sources/Usage
Public Domain.