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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 |
| 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. |
| 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 |
| 13RA31 | Austria | Marble | Sterzing | |
| 10LB20 | United States | Ohio | Sandstone | Lancaster |
| 10RB32 | United States | Colorado | Sandstone | Fort Collins |
| 11RB26 | United States | South Dakota | Sandstone | Hot Springs |
| 22EE | United States | Ohio | Sandstone | McDermott |
| 4R7 | Australia | Sandstone | New South Wales | |
| 5LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 5RA10 | United States | Ohio | Sandstone | Berea |
| 5RB1 | United States | Ohio | Sandstone | Amherst |
| 6LA20 | United States | Ohio | Sandstone | Newark |
| 6LB3 | United States | Pennsylvania | Sandstone | Oil City |
| 6RA8 | United States | Pennsylvania | Sandstone | Homewood |
| 6WE | United States | Ohio | Sandstone | Amherst |
| 7LB40 | United States | New Jersey | Sandstone | Newark |
| 7RB20 | United States | Ohio | Sandstone | Independence |
| 8LA31 | United States | Kentucky | Sandstone | Johnson Co. |
| 8LB36 | Scotland | Sandstone | Thurso | |
| 8RA37 | United States | Missouri | Sandstone | Howard Co. |
| 8RB40 | United States | New Jersey | Sandstone | Belleville |
| 9LA38 | United States | Indiana | Sandstone | Cannelton |
| 9LB41 | United States | Indiana | Sandstone | Williamsport |
| 9RA39 | United States | Wyoming | Sandstone | Rawlins |
| 9RB38 | United States | Oregon | Sandstone | Near Albany |
| S3-6 | United States | Ohio | Sandstone | McDermott |
| 10Lb37 | United States | West Virginia | Sandstone | Grafton |
| 10RB36 | United States | Missouri | Sandstone | St. Genevieve |
| 11RB29 | United States | Virginia | Sandstone | Manassas |
| 23EE | United States | Idaho | Sandstone | Boise |
| 4R8 | Australia | Sandstone | New South Wales | |
| 5LA3 | United States | Ohio | Sandstone | Peninsula |
| 5RA11 | United States | Ohio | Sandstone | Lithopolis |
| 5RB2 | United States | Ohio | Sandstone | Canal Dover Tuscarawas Co. |
| 6LA21 | United States | Ohio | Sandstone | Warwick |
| 6LB30 | United States | Kentucky | Sandstone | Cloveport |
| 6RA9 | United States | Pennsylvania | Sandstone | Garland |
| 7LB43 | United States | Michigan | Sandstone | L'Anse |
| 7RB25 | United States | New York | Sandstone | Margarettville |
| 8LA35 | United States | Connecticut | Sandstone | E. Haven |
| 8LB37 | United States | Missouri | Sandstone | Rockville |
| 8RB42 | United States | Montana | Sandstone | Columbus |
| 9LA39 | United States | Indiana | Sandstone | French Lick Twp. |
| 9LB43 | United States | Washington | Sandstone | Tenino |
| 9RA41 | United States | Illinois | Sandstone | Carbondale |
| 9RB39 | United States | Indiana | Sandstone | Paoli |
| 10LB38 | United States | Colorado | Sandstone | Fremont Co.- Ark. River |
| 10RB48 | United States | Wisconsin | Sandstone | Ableman |
| 11LB26 | United States | Iowa | Sandstone | Lewis |