OnDemand - 250K - HYDRO - Tunnel
Detailed Description
An underground or underwater passage that carries water bearing features such as CanalDitch or Pipeline. May be a named feature.
Sources/Usage
Public Domain.
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.
