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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 |
| 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. |
| 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 |
| 13RA31 | Austria | Marble | Sterzing | |
| 11Lb32 | United States | Utah | Sandstone | Red Butte |
| 14RQ | United States | Connecticut | Sandstone | Fair Haven |
| 2EE | United States | Ohio | Sandstone | Glenmont |
| 5LA10 | United States | Ohio | Sandstone | Sunbury |
| 5LA9 | United States | Ohio | Sandstone | Piketon |
| 5RA19 | United States | Ohio | Sandstone | Mansfield |
| 5RQ | United States | Ohio | Sandstone | Kipton |
| 6LA46 | United States | Michigan | Sandstone | Portage Entry |
| 6RA14 | United States | Pennsylvania | Sandstone | Fuller |
| 6RB29 | United States | Kentucky | Sandstone | Kirkmansville |
| 7La32 | United States | Minnesota | Sandstone | Hinckley |
| 7RA28 | United States | Kentucky | Sandstone | Cloveport |
| 7RQ | United States | Ohio | Sandstone | Kipton |
| 8La47 | United States | New Mexico | Sandstone | Las Vegas |
| 8RA20 | United States | Ohio | Sandstone | Elyria |
| 9LA19 | United States | Pennsylvania | Sandstone | Curwensville |
| 9Lb17 | United States | Pennsylvania | Sandstone | Homewood |
| 9RA21 | United States | Ohio | Sandstone | Monclava |
| S1-36 | United States | Ohio | Sandstone | Amherst |
| 10EE | United States | Ohio | Sandstone | Amherst |
| 11Lb35 | United States | Virginia | Sandstone | Saltville |
| 14WE | United States | Ohio | Sandstone | Amherst |
| 2RQ | United States | Ohio | Sandstone | Amherst |
| 5LA11 | United States | Ohio | Sandstone | Windham |
| 5LB1 | United States | Ohio | Sandstone | N. Hampton |
| 5RA2 | United States | Ohio | Sandstone | Iberia |
| 6LA47 | United States | Louisiana | Sandstone | Unknown |
| 6RA15 | United States | Pennsylvania | Sandstone | Connellsville |
| 6RB3 | United States | Pennsylvania | Sandstone | Kiasola Station Beaver Co. |
| 7La33 | United States | Connecticut | Sandstone | Cromwell |
| 7RA29 | United States | California | Sandstone | Angel Island |
| 7WE | United States | South Dakota | Sandstone | Hot Springs |
| 8LB20 | United States | Ohio | Sandstone | Berea |
| 8RA21 | United States | Ohio | Sandstone | Brooklyn |
| 8RB18 | United States | Pennsylvania | Sandstone | Fayette Station Fayette Co. |
| 9LA21 | United States | Ohio | Sandstone | Lancaster |
| 9LB21 | United States | Ohio | Sandstone | Twinsburg |
| 9RA22 | United States | Ohio | Sandstone | Newark |
| 9RB20 | United States | Ohio | Sandstone | Harmer |
| S1-37 | United States | Ohio | Sandstone | Amherst |
| 11LB41 | United States | Washington | Sandstone | Bellingham |
| 15WE | United States | Ohio | Sandstone | Glenmont |
| 5LA13 | United States | Ohio | Sandstone | New Lisbon |
| 5LB2 | United States | Ohio | Sandstone | Newburgh |
| 5RA3 | United States | Ohio | Sandstone | Bellaire |
| 6EE | United States | Ohio | Sandstone | McDermott |