Wall Number | Country | State | Classification | Source Sort descending |
---|---|---|---|---|
6RB13 | United States | Pennsylvania | Conglomerate | Friedensburg |
8RB44 | United States | Michigan | Sandstone | Isle Royale |
7LB43 | United States | Michigan | Sandstone | L'Anse |
7LB45 | United States | Michigan | Sandstone | L'Anse |
8RA44 | United States | Michigan | Sandstone | L'Anse |
7RA42 | United States | Michigan | Sandstone | Marquette |
9RB43 | Canada | Sandstone | Nepigon Bay, Ontario | |
9Lb35 | United States | South Dakota | Quartzite | Sioux Falls |