Alert levels and aviation color code icons for volcanoes within the...
![Alert levels and aviation color code icons for volcanoes within the...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img3237.png?itok=z5U2AFKc)
Detailed Description
Alert levels and aviation color code icons for volcanoes within the USGS area of responsibility.
Alert levels and aviation color code icons for volcanoes within the USGS area of responsibility.