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.
Bumpass Hell, a hydrothermal area in Lassen Volcanic National Park. The pools contain hot water that often bubble and steam.
Public Domain.
Lassen Volcanic National Park
