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.
An ominous statue of volcanic rock, covered with several varieties of lichen, is part of the Devils Backbone dike which cross-cuts four lava units. Photo by Annie Scott.