Wall Number | Country | State Sort descending | Classification | Source |
---|---|---|---|---|
14LA44 | Portugal | Limestone | Serra de Boa Viagem, Coimbra | |
14RB34 | Spain | Limestone | Saragossa Prov. | |
12RA14 | United States | Ohio | Limestone | Dayton |
13la10 | United States | Ohio | Limestone | Covington |
13RA8 | United States | Pennsylvania | Dolomite | Valley Branch Chester Co. |