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.
The USGS Hawaiian Volcano Observatory was the first volcano observatory in the United State and is located on the west rim of Kīlauea Volcano's summit caldera in Hawai‘i Volcanoes National Park.
Public Domain.
