Wall Number | Country | State Sort ascending | Classification | Source |
---|---|---|---|---|
4LB16 | United States | Delaware | Gneiss | Brandywine |
4L6 | United States | Connecticut | Sandstone | Portland |
4R6 | United States | Connecticut | Sandstone | Portland |
6LA47 | United States | Louisiana | Sandstone | Unknown |
13LA13 | United States | Iowa | Dolomite | Iowa Falls |
8La11 | United States | Illinois | Limestone | Belknap |