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Stone description: porous
| Wall Number | Country | State | Classification Sort ascending | Source |
|---|---|---|---|---|
| 5LB27 | Austria | Conglomerate | Lindabrunn | |
| 5RA34 | United States | Connecticut | Conglomerate | Portland |
| 9LA36 | United States | New Jersey | Conglomerate | May's Landing Atlantic Co. |
| 6RB13 | United States | Pennsylvania | Conglomerate | Friedensburg |
| 8RA42 | United States | Oregon | Basalt | Clackamas Station Clackamas Co |
| 6RB37 | Mexico | Tuff | Oaxaca State | |
| 10LA38 | Mexico | Dacite | Mexico State | |
| 6RB16 | United States | Pennsylvania | Diabase | Round Top Gettysburg |
| 14RB17 | United States | Iowa | Dolomite | Quarry, Marshall Co. |
| 10RA13 | United States | Ohio | Dolomite | White House |
| 11RB9 | United States | Kansas | Dolomite | Marion Center |
| 14RB18 | United States | Iowa | Dolomite | Dixon |
| 10RA14 | United States | Ohio | Dolomite | Van Wert |
| 13LA12 | United States | Ohio | Dolomite | Freemont |
| 14RB4 | United States | Illinois | Dolomite | Kankakee |
| 10RA15 | United States | Ohio | Dolomite | White House |
| 11LA15 | United States | Iowa | Dolomite | Clinton |
| 12LA10 | United States | Ohio | Dolomite | Euphemia |
| 13LA13 | United States | Iowa | Dolomite | Iowa Falls |
| 14LB11 | United States | Ohio | Dolomite | Greenfield |
| 11LA16 | United States | Iowa | Dolomite | Anamosa |
| 12LA11 | United States | Ohio | Dolomite | Pt. Marblehead |
| 14LB12 | United States | Ohio | Dolomite | Tiffin |
| 10LA11 | United States | Ohio | Dolomite | Lima |
| 11LA2 | United States | Michigan | Dolomite | Raisinville |
| 12LA16 | United States | Iowa | Dolomite | Maquoketa |
| 14LB16 | United States | Iowa | Dolomite | Clemont |
| 13LA5 | United States | Wisconsin | Dolomite | La Crosse |
| 13RA7 | United States | Minnesota | Dolomite | Mankato |
| 12LA8 | United States | Minnesota | Dolomite | Frontenac |
| 13LB10 | United States | Ohio | Dolomite | Springfield |
| 13RB10 | United States | Ohio | Dolomite | Sandusky |
| 12LB14 | United States | Missouri | Dolomite | Osage |
| 13RB16 | United States | Iowa | Dolomite | Farley |
| 14RA12 | United States | Ohio | Dolomite | Tiffin |
| 11LA6 | United States | Minnesota | Dolomite | Kasota |
| 13ra10 | United States | Ohio | Dolomite | Bellefountaine |
| 14ra13 | United States | Ohio | Dolomite | Columbus Grove |
| 10La9 | United States | Kansas | Dolomite | Marion Center |
| 11LB11 | United States | Ohio | Dolomite | Riley Twp. Putnam Co. |
| 13RA11 | United States | Ohio | Dolomite | Springfield |
| 14RA14 | United States | Iowa | Dolomite | Ames Station Story Co. |
| 11LB12 | United States | Ohio | Dolomite | Eaton |
| 11RB15 | United States | Iowa | Dolomite | Lansing |
| 13RA14 | United States | Iowa | Dolomite | Dixon Sta. |
| 14RA15 | United States | Iowa | Dolomite | Winterset |
| 12RA13 | United States | Ohio | Dolomite | Lima |
| 13RA16 | United States | Iowa | Dolomite | Stone City |
| 12RA16 | United States | Iowa | Dolomite | Farley |
| 14LA12 | United States | Ohio | Dolomite | Yellow Springs |
| 14LA14 | United States | Iowa | Dolomite | Mt. Vernon |
| 14LA16 | United States | Iowa | Dolomite | Stone City |
| 14RA5 | United States | Wisconsin | Dolomite | Buffalo Co. |
| 13RA31 | Austria | Marble | Sterzing | |
| 10Lb47 | United States | Wisconsin | Sandstone | Mauston |
| 10WE | United States | Ohio | Sandstone | Amherst |
| 11LB29 | United States | Missouri | Sandstone | Jones Station Ralls Co. |
| 11RB45 | United States | New Mexico | Sandstone | Las Vegas |
| 26WE | United States | Wyoming | Sandstone | Laramie |
| 4RQ | United States | Ohio | Sandstone | Amherst |
| 5LA6 | United States | Ohio | Sandstone | Weller Twp. Richland Co. |
| 5RA15 | United States | Ohio | Sandstone | Cambridge |
| 5RB5 | United States | Ohio | Sandstone | Brownhelm |
| 6La4 | United States | Pennsylvania | Sandstone | Wampum |
| 6LB9 | United States | Pennsylvania | Sandstone | Baden |
| 6RB2 | United States | Pennsylvania | Sandstone | Franklin |
| 7LA19 | United States | Ohio | Sandstone | Akron |
| 7RB36 | United States | Nevada | Sandstone | Carson City |
| 8LA39 | United States | Kansas | Sandstone | Oswego |
| 8LB47 | United States | New Mexico | Sandstone | Valencia Co. |
| 8RA44 | United States | Michigan | Sandstone | L'Anse |
| 8RB46 | United States | Washington | Sandstone | Tenino |
| 9LA42 | United States | Illinois | Sandstone | Chester |
| 9RA18 | United States | Pennsylvania | Sandstone | Meadville |
| 9RA44 | United States | Iowa | Sandstone | Davenport |
| S1-1 | United States | Ohio | Sandstone | McDermott |
| 11LB30 | United States | Missouri | Sandstone | Butler |
| 12WE | United States | Ohio | Sandstone | McDermott |
| 28EE | United States | Ohio | Sandstone | McDermott |
| 5LA7 | United States | Ohio | Sandstone | Millersburg |
| 5RA16 | United States | Ohio | Sandstone | Leesville |
| 5RB6 | United States | Ohio | Sandstone | Cumberland |
| 6LA42 | United States | New Jersey | Sandstone | Stockton |
| 6R48 | United States | North Carolina | Sandstone | Raleigh |
| 6RB20 | United States | Ohio | Sandstone | Amherst |
| 7LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 7RA19 | United States | Ohio | Sandstone | Carrollton |
| 7RB39 | United States | New Jersey | Sandstone | Avondale |
| 8LA42 | United States | New Jersey | Sandstone | Newark |
| 8r48 | United States | Ohio | Sandstone | Berea |
| 8RA46 | United States | Washington | Sandstone | Bellingham |
| 8RQ | United States | Ohio | Sandstone | McDermont |
| 9LA44 | United States | Florida | Sandstone | Suwannee River |
| 9RA19 | United States | Pennsylvania | Sandstone | Franklin |
| 9RA45 | Canada | Sandstone | Dorchester, New Brunswick | |
| S1-2 | United States | Ohio | Sandstone | McDermott |
| 11EE | United States | Ohio | Sandstone | Glenmont |
| 11LB31 | United States | Kansas | Sandstone | Pawnee |
| 11WE | United States | Ohio | Sandstone | Amherst |
| 5LA1 | United States | Ohio | Sandstone | Mt. Gilead |