Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Stone description: gray and brown

Wall Number Sort descending Country State Classification Source
10LB14 England Marble Bristol
10RB15 England Marble Bristol
7LB8 Austria Marble Castione
7RB14 Austria Marble Adnet
7RB7 Austria Marble Salzburg
8LA7 Austria Marble Castione
S1-44 United States Tennessee Sandstone Crossville