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Stone description: porous
| Wall Number | Country Sort descending | State | Classification | Source |
|---|---|---|---|---|
| 7RB28 | United States | California | Sandstone | Sites |
| 8RB44 | United States | Michigan | Sandstone | Isle Royale |
| 9RB40 | United States | Indiana | Sandstone | Attica |
| 10LB38 | United States | Colorado | Sandstone | Fremont Co.- Ark. River |
| 12RA32 | United States | Indiana | Limestone | Salem |
| 24EE | United States | Ohio | Sandstone | Glenmont |
| 5RB3 | United States | Ohio | Sandstone | Bedford |
| 7EE | United States | Ohio | Sandstone | McDermott |
| 8LB38 | United States | Arizona | Sandstone | Yavapai Co. |
| 9Lb44 | United States | Wyoming | Sandstone | Laramie |
| 9RA12 | United States | Iowa | Limestone | Iowa City |
| 14LA16 | United States | Iowa | Dolomite | Stone City |
| 5LA5 | United States | Ohio | Sandstone | Piketon |
| 6LB7 | United States | Pennsylvania | Sandstone | Yardleyville |
| 7RB30 | United States | Texas | Sandstone | Milsap |
| 8RB45 | United States | Wisconsin | Sandstone | Packwaukee |
| 9WE | United States | Ohio | Sandstone | McDermott |
| 10Lb46 | United States | Wisconsin | Sandstone | Mauston |
| 12RA36 | United States | Kentucky | Limestone | Garrett |
| 25WE | United States | Ohio | Sandstone | Amherst |
| 5RB4 | United States | Ohio | Sandstone | Bellaire |
| 7LA10 | United States | Florida | Limestone | Key West |
| 8LB39 | United States | West Virginia | Sandstone | Wheeling |
| 7LA19 | United States | Ohio | Sandstone | Akron |
| 8LB47 | United States | New Mexico | Sandstone | Valencia Co. |
| 9RA18 | United States | Pennsylvania | Sandstone | Meadville |
| 11LB29 | United States | Missouri | Sandstone | Jones Station Ralls Co. |
| 5LA6 | United States | Ohio | Sandstone | Weller Twp. Richland Co. |
| 6LB9 | United States | Pennsylvania | Sandstone | Baden |
| 7RB36 | United States | Nevada | Sandstone | Carson City |
| 8RB46 | United States | Washington | Sandstone | Tenino |
| S1-1 | United States | Ohio | Sandstone | McDermott |
| 10Lb47 | United States | Wisconsin | Sandstone | Mauston |
| 12RB40 | United States | Alabama | Limestone | Turks Cave |
| 26WE | United States | Wyoming | Sandstone | Laramie |
| 5RB5 | United States | Ohio | Sandstone | Brownhelm |
| 28EE | United States | Ohio | Sandstone | McDermott |
| 5RB6 | United States | Ohio | Sandstone | Cumberland |
| 7LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 8r48 | United States | Ohio | Sandstone | Berea |
| 9RA19 | United States | Pennsylvania | Sandstone | Franklin |
| 11LB30 | United States | Missouri | Sandstone | Butler |
| 5LA7 | United States | Ohio | Sandstone | Millersburg |
| 6R48 | United States | North Carolina | Sandstone | Raleigh |
| 7RB39 | United States | New Jersey | Sandstone | Avondale |
| 8RQ | United States | Ohio | Sandstone | McDermont |
| S1-2 | United States | Ohio | Sandstone | McDermott |
| 10RA13 | United States | Ohio | Dolomite | White House |
| 12WE | United States | Ohio | Sandstone | McDermott |
| 10RA14 | United States | Ohio | Dolomite | Van Wert |
| 13LA12 | United States | Ohio | Dolomite | Freemont |
| 2c | United States | Alabama | Limestone | Rockwood |
| 5RB8 | United States | Ohio | Sandstone | Independence |
| 7LA31 | United States | Colorado | Sandstone | Fort Collins |
| 8RA16 | United States | Indiana | Limestone | Ellettsville |
| 9RA20 | United States | Pennsylvania | Sandstone | Uniontown |
| 11LB31 | United States | Kansas | Sandstone | Pawnee |
| 14La48 | United States | Texas | Limestone | Cedar Park |
| 5La8 | United States | Ohio | Sandstone | Youngstown |
| 6RA11 | United States | Pennsylvania | Sandstone | Layton Station Fayette Co. |
| 7RB42 | United States | Michigan | Sandstone | Marquette |
| 9EE | United States | Ohio | Sandstone | Glenmont |
| S1-35 | United States | Ohio | Sandstone | Glenmont |
| 10RA15 | United States | Ohio | Dolomite | White House |
| 13LA13 | United States | Iowa | Dolomite | Iowa Falls |
| 2EE | United States | Ohio | Sandstone | Glenmont |
| 5RQ | United States | Ohio | Sandstone | Kipton |
| 7La32 | United States | Minnesota | Sandstone | Hinckley |
| 8RA20 | United States | Ohio | Sandstone | Elyria |
| 9RA21 | United States | Ohio | Sandstone | Monclava |
| 11Lb32 | United States | Utah | Sandstone | Red Butte |
| 14LB11 | United States | Ohio | Dolomite | Greenfield |
| 5LA9 | United States | Ohio | Sandstone | Piketon |
| 6RA14 | United States | Pennsylvania | Sandstone | Fuller |
| 7RQ | United States | Ohio | Sandstone | Kipton |
| 9LA19 | United States | Pennsylvania | Sandstone | Curwensville |
| S1-36 | United States | Ohio | Sandstone | Amherst |
| 10RA22 | United States | Kansas | Limestone | Smoky Hill Reservation |
| 2RQ | United States | Ohio | Sandstone | Amherst |
| 6C | United States | Indiana | Limestone | ? |
| 7La33 | United States | Connecticut | Sandstone | Cromwell |
| 8RA21 | United States | Ohio | Sandstone | Brooklyn |
| 9RA22 | United States | Ohio | Sandstone | Newark |
| 11Lb35 | United States | Virginia | Sandstone | Saltville |
| 14LB12 | United States | Ohio | Dolomite | Tiffin |
| 5LB1 | United States | Ohio | Sandstone | N. Hampton |
| 6RA15 | United States | Pennsylvania | Sandstone | Connellsville |
| 7WE | United States | South Dakota | Sandstone | Hot Springs |
| 9LA21 | United States | Ohio | Sandstone | Lancaster |
| S1-37 | United States | Ohio | Sandstone | Amherst |
| 10RA24 | United States | Kansas | Limestone | Armstrong |
| 13La45 | United States | Kentucky | Limestone | Frankfort |
| 2WE | United States | Texas | Limestone | Cedar Park |
| 6EE | United States | Ohio | Sandstone | McDermott |
| 7LA39 | United States | New Jersey | Sandstone | Patterson |
| 8RA23 | United States | Massachusetts | Sandstone | E. Long Meadow |
| 9RA24 | United States | North Carolina | Sandstone | Raleigh |
| 11LB41 | United States | Washington | Sandstone | Bellingham |
| 14LB16 | United States | Iowa | Dolomite | Clemont |
| 5LB2 | United States | Ohio | Sandstone | Newburgh |