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.
View from the ground of the new thermal area near Tern Lake in Yellowstone National Park. Research conducted under NPS Geology Programs Milestones Permit 2016-9.
Public Domain.
