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.
Interior of a water tunnel though ash layers in the Ka'ū district. Water collects near the tunnel entrance and is transported by PVC pipe for agricultural use. USGS Photo.
