Wall Number | Country | State Sort descending | Classification | Source |
---|---|---|---|---|
10RB30 | United States | New York | Argillite (Slate) | Middle Granville |
9RA30 | United States | New York | Argillite (Slate) | Hampton |
10L51 | United States | Pennsylvania | Argillite (Slate) | Lynnport |
10LB18 | United States | Pennsylvania | Argillite (Slate) | Lynnport |
10R51 | United States | Pennsylvania | Argillite (Slate) | Lynnport |
9RA17 | United States | Pennsylvania | Argillite (Slate) | Lynnport |