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Stone description: porous
| Wall Number | Country | State | Classification | Source Sort ascending |
|---|---|---|---|---|
| 10LB38 | United States | Colorado | Sandstone | Fremont Co.- Ark. River |
| 13LA12 | United States | Ohio | Dolomite | Freemont |
| 9RA19 | United States | Pennsylvania | Sandstone | Franklin |
| 6RB2 | United States | Pennsylvania | Sandstone | Franklin |
| 13La45 | United States | Kentucky | Limestone | Frankfort |
| 8RB33 | United States | Colorado | Sandstone | Fort Collins |
| 7LA31 | United States | Colorado | Sandstone | Fort Collins |
| 10RB32 | United States | Colorado | Sandstone | Fort Collins |
| 9Lb37 | United States | Oregon | Sandstone | Forest Grove |
| 8RB18 | United States | Pennsylvania | Sandstone | Fayette Station Fayette Co. |
| 6RA6 | United States | Pennsylvania | Sandstone | Farrandsville |
| 13RB16 | United States | Iowa | Dolomite | Farley |
| 12RA16 | United States | Iowa | Dolomite | Farley |
| 10RQ | United States | Connecticut | Sandstone | Fair Haven |
| 14RQ | United States | Connecticut | Sandstone | Fair Haven |
| 12LA10 | United States | Ohio | Dolomite | Euphemia |
| 5RA12 | United States | Ohio | Sandstone | Euclid |
| 8RB15 | United States | Utah | Limestone | Ephriam |
| 8RA20 | United States | Ohio | Sandstone | Elyria |
| 7RA20 | United States | Ohio | Sandstone | Elyria |
| 8RA16 | United States | Indiana | Limestone | Ellettsville |
| 8RA25 | United States | North Carolina | Sandstone | Egypt |
| 11LB12 | United States | Ohio | Dolomite | Eaton |
| 8RA23 | United States | Massachusetts | Sandstone | E. Long Meadow |
| 8LA35 | United States | Connecticut | Sandstone | E. Haven |
| 5RA18 | United States | Ohio | Sandstone | E. Cleveland |
| 8RA24 | United States | North Carolina | Sandstone | Durham |
| 11RA38 | United States | Tennessee | Sandstone | Ducktown |
| 13RA24 | United States | Kansas | Limestone | Douglass |
| 9RA45 | Canada | Sandstone | Dorchester, New Brunswick | |
| 13RA14 | United States | Iowa | Dolomite | Dixon Sta. |
| 14RB18 | United States | Iowa | Dolomite | Dixon |
| 14LB28 | United States | Tennessee | Limestone | Davidson Co. |
| 9RA44 | United States | Iowa | Sandstone | Davenport |
| 11RB34 | United States | Oregon | Sandstone | Dallas |
| 9RB34 | United States | Alabama | Sandstone | DaKalb County |
| 9LA19 | United States | Pennsylvania | Sandstone | Curwensville |
| 5RB6 | United States | Ohio | Sandstone | Cumberland |
| 7La33 | United States | Connecticut | Sandstone | Cromwell |
| 11LB22 | United States | Kansas | Limestone | Cottonwood |
| 11LB22 | United States | Kansas | Limestone | Cottonwood |
| 11Ra25 | United States | Kansas | Limestone | Cottonwood |
| 11RA27 | United States | Kansas | Limestone | Cottonwood |
| 6RA15 | United States | Pennsylvania | Sandstone | Connellsville |
| 6RA4 | United States | Pennsylvania | Sandstone | Connellsville |
| 14ra13 | United States | Ohio | Dolomite | Columbus Grove |
| 8RB42 | United States | Montana | Sandstone | Columbus |
| 8LA43 | United States | Montana | Sandstone | Columbus |
| 13RB39 | United States | Illinois | Limestone | Columbia |
| 7RA31 | United States | Colorado | Sandstone | Coal Creek |
| 8LB31 | United States | Kentucky | Sandstone | Cloveport |
| 6LB30 | United States | Kentucky | Sandstone | Cloveport |
| 7RA28 | United States | Kentucky | Sandstone | Cloveport |
| 8LA36 | United States | Missouri | Sandstone | Clinton |
| 11LA15 | United States | Iowa | Dolomite | Clinton |
| 14LB16 | United States | Iowa | Dolomite | Clemont |
| 8RA42 | United States | Oregon | Basalt | Clackamas Station Clackamas Co |
| 9LA41 | United States | Illinois | Sandstone | Chester |
| 9LA42 | United States | Illinois | Sandstone | Chester |
| 9RB35 | United States | West Virginia | Sandstone | Charleston |
| 1WE | United States | Texas | Limestone | Cedar Park |
| 14La48 | United States | Texas | Limestone | Cedar Park |
| 2WE | United States | Texas | Limestone | Cedar Park |
| 3C | United States | Texas | Limestone | Cedar Park |
| 14RA48 | United States | Texas | Limestone | Cedar Park |
| 7RB36 | United States | Nevada | Sandstone | Carson City |
| 7RA19 | United States | Ohio | Sandstone | Carrollton |
| 9RA41 | United States | Illinois | Sandstone | Carbondale |
| 8LB33 | United States | Colorado | Sandstone | Canon City |
| 6RB7 | United States | Pennsylvania | Sandstone | Cannonsburgh |
| 9LA38 | United States | Indiana | Sandstone | Cannelton |
| 5RB2 | United States | Ohio | Sandstone | Canal Dover Tuscarawas Co. |
| 5RA15 | United States | Ohio | Sandstone | Cambridge |
| 11LB30 | United States | Missouri | Sandstone | Butler |
| 14RA5 | United States | Wisconsin | Dolomite | Buffalo Co. |
| 5RA4 | United States | Ohio | Sandstone | Buena Vista |
| 5RB5 | United States | Ohio | Sandstone | Brownhelm |
| 8RA21 | United States | Ohio | Sandstone | Brooklyn |
| 13RA36 | Hungary | Limestone | Breitenbrunn | |
| 23EE | United States | Idaho | Sandstone | Boise |
| S2-132 | United States | Idaho | Sandstone | Boise |
| S2-8 | United States | Idaho | Sandstone | Boise |
| 9RA43 | United States | Idaho | Sandstone | Boise |
| 7C | United States | Indiana | Limestone | Bloomington |
| 8C | United States | Indiana | Limestone | Bloomington |
| 10C | United States | Indiana | Limestone | Bloomington |
| 6RB8 | United States | Pennsylvania | Sandstone | Black Walnut |
| 9RB21 | United States | Ohio | Sandstone | Berea |
| 8r48 | United States | Ohio | Sandstone | Berea |
| 8L48 | United States | Ohio | Sandstone | Berea |
| 4L9 | United States | Ohio | Sandstone | Berea |
| 5RA10 | United States | Ohio | Sandstone | Berea |
| 4R9 | United States | Ohio | Sandstone | Berea |
| 8LB20 | United States | Ohio | Sandstone | Berea |
| 11LB41 | United States | Washington | Sandstone | Bellingham |
| 8RA46 | United States | Washington | Sandstone | Bellingham |
| 7RA39 | United States | New Jersey | Sandstone | Belleville |
| 9RB36 | United States | New Jersey | Sandstone | Belleville |
| 5RA9 | United States | Ohio | Sandstone | Belleville |
| 8RB40 | United States | New Jersey | Sandstone | Belleville |