An official website of the United States government
Here's how you know
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.
Volcano Watch — A pioneering volcanologist narrowly beats the Reaper
Two pioneering volcanologists-Thomas Jaggar and Frank Perret-set up the first systematic monitoring station in Hawai`i's Kīlauea caldera in 1911. The...
Volcano Watch — A pioneering volcanologist narrowly beats the Reaper
Two pioneering volcanologists-Thomas Jaggar and Frank Perret-set up the first systematic monitoring station in Hawai`i's Kīlauea caldera in 1911. The...