Skip to main content
U.S. flag

An official website of the United States government

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.

Stone description: dark gray

Wall Number Country Sort ascending State Classification Source
8LA9 Canada Limestone Kingston
8RA9 Canada Limestone Montreal
13RA26 Canada Limestone Montreal region
5LA26 Austria Pitchstone Castleruth
14RA3 United States Illinois Dolomite Saline
6RB22 United States Massachusetts Granite Rockport
11RB14 United States Missouri Dolomite Hermann
14RA6 United States Wisconsin Dolomite Neenah
6RB26 United States Maine Granite Bryant's Pond
11RB30 United States Virginia Schist Farquier Co.
5RA43 United States New Jersey Diabase Weehawken
14RA9 United States Pennsylvania Limestone Vanport
6RB42 United States South Carolina Granite Batesburg
11RB31 United States Virginia Diabase Leesburg
5RB12 United States Massachusetts Granite Quincy
6RB43 United States New Jersey Diabase Rocky Hill
12LA22 United States Missouri Limestone Pleasant Hill
5RB13 United States Massachusetts Granite Quincy
14RB38 United States Pennsylvania Marble Pine Grove Schuylkill Co.
7LB17 United States Pennsylvania Gneiss Chester
12LA7 United States New York Limestone Canajoharie
5RB14 United States Massachusetts Granite Quincy
14RB46 United States Kentucky Limestone Stewart's Mill Clark Co.
7LB27 United States New York Sandstone Phoenicia
12LB13 United States Montana Marble Helena
5RB16 United States Massachusetts Diabase E. Longmeadow
14RB47 United States Kentucky Limestone Bloomfield
7LB33 United States Connecticut Gneiss Haddam
12LB7 United States New York Limestone Le Roy
5RB17 United States Massachusetts Granite Quincy
1L1 United States Connecticut Gneiss Milford
7RA11 United States Connecticut Limestone Shelterville
12RA12 United States Ohio Dolomite Lexington
5RB18 United States Massachusetts Granite Quincy
1L7 United States Massachusetts Granite Quincy
7RA25 United States Maine Granite Canaan
12RA17 United States Iowa Dolomite Garrison
5RB19 United States Massachusetts Granite Quincy
1L8 United States Massachusetts Granite Quincy
8LA23 United States Massachusetts Diabase Medford
12RB13 United States Ohio Dolomite Holmes Twp. Crawford C.
5RB20 United States Massachusetts Granite Quincy
1L9 United States Massachusetts Granite Quincy
8LA27 United States Maine Diabase Addison Point
12RB17 United States Iowa Dolomite Garrison
5RB27 United States Maine Diabase Addison
1R7 United States Massachusetts Granite Quincy
8LA39 United States Kansas Sandstone Oswego
12RB23 United States Kansas Limestone Oswego
5RB35 United States Connecticut Diabase New Haven
10L51 United States Pennsylvania Argillite (Slate) Lynnport
1R8 United States Massachusetts Granite Quincy
8LA43 United States Montana Sandstone Columbus
12RB24 United States Tennessee Limestone Lebanon Pike
5RB46 United States Delaware Gneiss Wilmington
10LA30 United States Maine Diabase Vinal Haven
1R9 United States Massachusetts Granite Quincy
8LA45 United States Washington Sandstone Olymphia
12RB4 United States Illinois Limestone Breese
6LA18 United States Pennsylvania Sandstone Queens Run Clinton Co.
10LA42 United States New Jersey Diabase Jersey City
4LB16 United States Delaware Gneiss Brandywine
12RB5 United States Tennessee Limestone Murfreesborough
6LA36 United States Connecticut Gneiss Greenwich
10LA5 United States Wisconsin Dolomite Oshkosh
5LA23 United States North Carolina Granite Davidson College
8LB27 United States Maine Granite St. George
12RQ United States New York Sandstone South Unadilla
6LA39 United States Massachusetts Gneiss Monson
10LA7 United States New York Limestone Onondaga
8Lb40 United States West Virginia Sandstone Rowlesburgh
13La1 United States Vermont Limestone Isle La Motte
6LA41 United States South Carolina Granite Aiken Co.
10LB18 United States Pennsylvania Argillite (Slate) Lynnport
5LA31 United States Colorado Granite Salida
8Lb8 United States Ohio Limestone Hamilton
6LB14 United States Pennsylvania Diabase Collins Station Lancaster Co.
10LB23 United States Massachusetts Gneiss Becket
5LA33 United States Minnesota Diabase Duluth
8RA18 United States Kentucky Limestone Lebanon
13LA43 United States Kentucky Limestone Grahampton
6LB18 United States Pennsylvania Gneiss Philadelphia
10R51 United States Pennsylvania Argillite (Slate) Lynnport
5LA34 United States Connecticut Gneiss Middletown
8RA27 United States Maine Schist Knightsville
13La46 United States Kentucky Limestone Livingstone
6Lb19 United States Pennsylvania Diabase Jacksonwald
5La35 United States Connecticut Gneiss N. Bridgeport
8RA6 United States New York Limestone Sandy Hill
13LB12 United States New Jersey Dolomite Newton
6LB29 United States New York Gneiss Hastings
10RB23 United States Massachusetts Granite Framingham
5La40 United States South Carolina Granite Greenville
13LB45 United States Kentucky Limestone Green Co.
6LB4 United States Pennsylvania Sandstone Schickshinny Luzerne Co.
10RB42 United States Oregon Basalt Albany
5LA43 United States New Hampshire Gneiss Sunapee
8RB24 United States North Carolina Granite Oxford
6LB43 United States New Jersey Diabase Lambertville
10RB49 United States Wisconsin Quartz Marquette