Wall Number | Country | State | Classification | Source Sort descending |
---|---|---|---|---|
6RB8 | United States | Pennsylvania | Sandstone | Black Walnut |
9RB16 | United States | Maryland | Marble | New Windsor |
6Lb5 | United States | Pennsylvania | Sandstone | Nicholson |
8RA31 | United States | Kentucky | Sandstone | Pineville |
8LB25 | United States | North Carolina | Gneiss | Raleigh |
6La17 | United States | Pennsylvania | Sandstone | Skinner's Eddy |
11LA34 | United States | South Carolina | Marble | Unknown |
6RA30 | United States | Kentucky | Sandstone | Whitney Co. |