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Stone description: porous
| Wall Number | Country | State | Classification Sort ascending | Source |
|---|---|---|---|---|
| 6RB13 | United States | Pennsylvania | Conglomerate | Friedensburg |
| 5LB27 | Austria | Conglomerate | Lindabrunn | |
| 5RA34 | United States | Connecticut | Conglomerate | Portland |
| 9LA36 | United States | New Jersey | Conglomerate | May's Landing Atlantic Co. |
| 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 |
| 14LA14 | United States | Iowa | Dolomite | Mt. Vernon |
| 14LA16 | United States | Iowa | Dolomite | Stone City |
| 14RA5 | United States | Wisconsin | Dolomite | Buffalo Co. |
| 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 |
| 13RA31 | Austria | Marble | Sterzing | |
| 10LB38 | United States | Colorado | Sandstone | Fremont Co.- Ark. River |
| 10RB48 | United States | Wisconsin | Sandstone | Ableman |
| 11LB26 | United States | Iowa | Sandstone | Lewis |
| 11RB33 | United States | Oregon | Sandstone | Jacksonville |
| 13RA22 | United States | Missouri | Sandstone | Miami Station Carroll Co. |
| 24EE | United States | Ohio | Sandstone | Glenmont |
| 4R9 | United States | Ohio | Sandstone | Berea |
| 5LA4 | United States | Ohio | Sandstone | Norwalk |
| 5RA12 | United States | Ohio | Sandstone | Euclid |
| 5RB3 | United States | Ohio | Sandstone | Bedford |
| 6LA3 | United States | Pennsylvania | Sandstone | Wampum |
| 6LB39 | United States | Ohio | Sandstone | Youngstown |
| 7EE | United States | Ohio | Sandstone | McDermott |
| 7LB44 | United States | Michigan | Sandstone | Stony Point |
| 7RB28 | United States | California | Sandstone | Sites |
| 8LA36 | United States | Missouri | Sandstone | Clinton |
| 8LB38 | United States | Arizona | Sandstone | Yavapai Co. |
| 8RA40 | United States | New Jersey | Sandstone | Belleville |
| 8RB44 | United States | Michigan | Sandstone | Isle Royale |
| 9LA40 | United States | Illinois | Sandstone | Pinckneyville |
| 9Lb44 | United States | Wyoming | Sandstone | Laramie |
| 9RA42 | United States | Illinois | Sandstone | Xenia |
| 9RB40 | United States | Indiana | Sandstone | Attica |
| 10Lb46 | United States | Wisconsin | Sandstone | Mauston |
| 10RQ | United States | Connecticut | Sandstone | Fair Haven |
| 11LB28 | Scotland | Sandstone | Ballochmyle | |
| 11RB34 | United States | Oregon | Sandstone | Dallas |
| 25WE | United States | Ohio | Sandstone | Amherst |
| 5LA5 | United States | Ohio | Sandstone | Piketon |
| 5RA13 | United States | Ohio | Sandstone | Marietta |
| 5RB4 | United States | Ohio | Sandstone | Bellaire |
| 6La30 | United States | Kentucky | Sandstone | Livingstone |
| 6LB7 | United States | Pennsylvania | Sandstone | Yardleyville |
| 7LB45 | United States | Michigan | Sandstone | L'Anse |
| 7RB30 | United States | Texas | Sandstone | Milsap |
| 8LA37 | United States | Missouri | Sandstone | Warrensburg |
| 8LB39 | United States | West Virginia | Sandstone | Wheeling |
| 8RB45 | United States | Wisconsin | Sandstone | Packwaukee |
| 9LA41 | United States | Illinois | Sandstone | Chester |
| 9RA43 | United States | Idaho | Sandstone | Boise |
| 9WE | United States | Ohio | Sandstone | McDermott |
| 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 |