Wall Number | Country | State Sort descending | Classification | Source |
---|---|---|---|---|
6RA41 | United States | Maryland | Argillite (Slate) | Nr. Cardiff |
10RB30 | United States | New York | Argillite (Slate) | Middle Granville |
9LA31 | United States | New York | Argillite (Slate) | Granville |
9RA30 | United States | New York | Argillite (Slate) | Hampton |