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Stone description: porous
| Wall Number | Country | State Sort descending | Classification | Source |
|---|---|---|---|---|
| 10RA31 | United States | Kansas | Sandstone | Parsons |
| 11Ra25 | United States | Kansas | Limestone | Cottonwood |
| 10RA32 | United States | Kansas | Sandstone | Parsons |
| 11RA27 | United States | Kansas | Limestone | Cottonwood |
| 13RA23 | United States | Kansas | Limestone | Augusta |
| 8LA39 | United States | Kansas | Sandstone | Oswego |
| 13RA24 | United States | Kansas | Limestone | Douglass |
| 11RB9 | United States | Kansas | Dolomite | Marion Center |
| 10LA25 | United States | Kansas | Limestone | Greeley |
| 5LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 6LB30 | United States | Kentucky | Sandstone | Cloveport |
| 12RA36 | United States | Kentucky | Limestone | Garrett |
| 7LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 13La45 | United States | Kentucky | Limestone | Frankfort |
| 11LB45 | United States | Kentucky | Sandstone | Whitney Co. |
| 6RA30 | United States | Kentucky | Sandstone | Whitney Co. |
| 8LA31 | United States | Kentucky | Sandstone | Johnson Co. |
| 6La30 | United States | Kentucky | Sandstone | Livingstone |
| 6RB29 | United States | Kentucky | Sandstone | Kirkmansville |
| 7RA28 | United States | Kentucky | Sandstone | Cloveport |
| 13RA43 | United States | Kentucky | Limestone | Hopkinsville |
| 8LB31 | United States | Kentucky | Sandstone | Cloveport |
| 6LA47 | United States | Louisiana | Sandstone | Unknown |
| 8RA23 | United States | Massachusetts | Sandstone | E. Long Meadow |
| 8RB44 | United States | Michigan | Sandstone | Isle Royale |
| 7RB42 | United States | Michigan | Sandstone | Marquette |
| 7LB43 | United States | Michigan | Sandstone | L'Anse |
| 7LB44 | United States | Michigan | Sandstone | Stony Point |
| 7LB45 | United States | Michigan | Sandstone | L'Anse |
| 8RA44 | United States | Michigan | Sandstone | L'Anse |
| 6LA46 | United States | Michigan | Sandstone | Portage Entry |
| 11LA2 | United States | Michigan | Dolomite | Raisinville |
| 7RA42 | United States | Michigan | Sandstone | Marquette |
| 11LA6 | United States | Minnesota | Dolomite | Kasota |
| 8LB34 | United States | Minnesota | Sandstone | Mendota |
| 7La32 | United States | Minnesota | Sandstone | Hinckley |
| 9RA33 | United States | Minnesota | Sandstone | Jordan |
| 13RA7 | United States | Minnesota | Dolomite | Mankato |
| 12LA8 | United States | Minnesota | Dolomite | Frontenac |
| 8LB37 | United States | Missouri | Sandstone | Rockville |
| 11LB29 | United States | Missouri | Sandstone | Jones Station Ralls Co. |
| 11LB30 | United States | Missouri | Sandstone | Butler |
| 9RA34 | United States | Missouri | Sandstone | Rockville |
| 8RA36 | United States | Missouri | Sandstone | Nevada |
| 8RA37 | United States | Missouri | Sandstone | Howard Co. |
| 10RB36 | United States | Missouri | Sandstone | St. Genevieve |
| 8LA36 | United States | Missouri | Sandstone | Clinton |
| 13RA22 | United States | Missouri | Sandstone | Miami Station Carroll Co. |
| 8LA37 | United States | Missouri | Sandstone | Warrensburg |
| 9LA5 | United States | Missouri | Limestone | Barrett's Station |
| 12LB14 | United States | Missouri | Dolomite | Osage |
| 9RB32 | United States | Missouri | Sandstone | Meadville |
| 8RB42 | United States | Montana | Sandstone | Columbus |
| 8LA43 | United States | Montana | Sandstone | Columbus |
| 7RB36 | United States | Nevada | Sandstone | Carson City |
| 8RB39 | United States | New Jersey | Sandstone | Little Falls |
| 9RB36 | United States | New Jersey | Sandstone | Belleville |
| 8RB40 | United States | New Jersey | Sandstone | Belleville |
| 7RB39 | United States | New Jersey | Sandstone | Avondale |
| 7LA39 | United States | New Jersey | Sandstone | Patterson |
| 7LA40 | United States | New Jersey | Sandstone | Orange Mt. |
| 9LA36 | United States | New Jersey | Conglomerate | May's Landing Atlantic Co. |
| 7LB39 | United States | New Jersey | Sandstone | Pleasant Val. |
| 7LB40 | United States | New Jersey | Sandstone | Newark |
| 8RA40 | United States | New Jersey | Sandstone | Belleville |
| 8LA42 | United States | New Jersey | Sandstone | Newark |
| 6LA42 | United States | New Jersey | Sandstone | Stockton |
| 6LA43 | United States | New Jersey | Sandstone | Pleasant Val. |
| 7RA39 | United States | New Jersey | Sandstone | Belleville |
| 8LB38 | United States | Arizona | Sandstone | Yavapai Co. |
| 8LB47 | United States | New Mexico | Sandstone | Valencia Co. |
| 7LA45 | United States | New Mexico | Sandstone | Santa Fe |
| 11RB45 | United States | New Mexico | Sandstone | Las Vegas |
| 8La47 | United States | New Mexico | Sandstone | Las Vegas |
| 7RA44 | United States | New Mexico | Sandstone | Las Vegas |
| 7RB25 | United States | New York | Sandstone | Margarettville |
| 10RB29 | United States | New York | Sandstone | Medina |
| 8LB28 | United States | New York | Sandstone | Hulberton |
| 6R48 | United States | North Carolina | Sandstone | Raleigh |
| 9RA24 | United States | North Carolina | Sandstone | Raleigh |
| 9LA25 | United States | North Carolina | Sandstone | Raleigh |
| 6L48 | United States | North Carolina | Sandstone | Raleigh |
| 8RA24 | United States | North Carolina | Sandstone | Durham |
| 9RA25 | United States | North Carolina | Sandstone | Raleigh |
| 9LA26 | United States | North Carolina | Sandstone | Raleigh |
| 8RA25 | United States | North Carolina | Sandstone | Egypt |
| 8RA26 | United States | North Carolina | Sandstone | Morrisville |
| 8LA24 | United States | North Carolina | Sandstone | Sanford |
| 8LA26 | United States | North Carolina | Sandstone | Wadesboro |
| 19WE | United States | Ohio | Sandstone | McDermott |
| 5RA6 | United States | Ohio | Sandstone | Howard Station Knox Co. |
| 5LA18 | United States | Ohio | Sandstone | Plymouth |
| 1RQ | United States | Ohio | Sandstone | Amherst |
| 5RA7 | United States | Ohio | Sandstone | Lewis Mills |
| 11LB11 | United States | Ohio | Dolomite | Riley Twp. Putnam Co. |
| 5LA19 | United States | Ohio | Sandstone | Mt. Gilead |
| 6LB20 | United States | Ohio | Sandstone | Sunbury |
| 5La2 | United States | Ohio | Sandstone | Norwalk |
| 6LB21 | United States | Ohio | Sandstone | Millersburg |
| 7RB19 | United States | Ohio | Sandstone | Amherst |