Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Screenshot from "40 Years of Watching Mount St. Helens."
Visit the Mount St. Helens Earthshot for more information and view images before, during, and after the eruption.
Public Domain.
