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Stone description: porous
| Wall Number | Country Sort ascending | State | Classification | Source |
|---|---|---|---|---|
| 11LB45 | United States | Kentucky | Sandstone | Whitney Co. |
| 14LB28 | United States | Tennessee | Limestone | Davidson Co. |
| 6RA21 | United States | Ohio | Sandstone | Ridgeville |
| 8EE | United States | Ohio | Sandstone | Amherst |
| 9LA25 | United States | North Carolina | Sandstone | Raleigh |
| S2-10 | United States | Ohio | Sandstone | McDermott |
| 10RA31 | United States | Kansas | Sandstone | Parsons |
| 13LA5 | United States | Wisconsin | Dolomite | La Crosse |
| 3C | United States | Texas | Limestone | Cedar Park |
| 6L48 | United States | North Carolina | Sandstone | Raleigh |
| 8RA24 | United States | North Carolina | Sandstone | Durham |
| 9RA25 | United States | North Carolina | Sandstone | Raleigh |
| 11Ra25 | United States | Kansas | Limestone | Cottonwood |
| 5Lb3 | United States | Ohio | Sandstone | Zanesville |
| 6RA3 | United States | Pennsylvania | Sandstone | Hummelstown |
| 8L48 | United States | Ohio | Sandstone | Berea |
| 9LA26 | United States | North Carolina | Sandstone | Raleigh |
| S2-126 | United States | Wyoming | Sandstone | Laramie |
| 10RA32 | United States | Kansas | Sandstone | Parsons |
| 13LB10 | United States | Ohio | Dolomite | Springfield |
| 3RQ | United States | Ohio | Sandstone | Amherst |
| 6La10 | United States | Pennsylvania | Sandstone | Stoneboro |
| 7LA40 | United States | New Jersey | Sandstone | Orange Mt. |
| 8RA25 | United States | North Carolina | Sandstone | Egypt |
| 11RA27 | United States | Kansas | Limestone | Cottonwood |
| 14RA12 | United States | Ohio | Dolomite | Tiffin |
| 5LB4 | United States | Ohio | Sandstone | New Philadelphia |
| 6RA30 | United States | Kentucky | Sandstone | Whitney Co. |
| 8LA20 | United States | Ohio | Sandstone | Portsmouth |
| S2-132 | United States | Idaho | Sandstone | Boise |
| 10RB14 | United States | Indiana | Limestone | Stinesville |
| 6LA12 | United States | Pennsylvania | Sandstone | Reading |
| 7LA45 | United States | New Mexico | Sandstone | Santa Fe |
| 8RA26 | United States | North Carolina | Sandstone | Morrisville |
| 9RA3 | United States | Colorado | Limestone | Morrison |
| 13RA35 | Spain | Limestone | Murcia, Murcia | |
| 8RB36 | Scotland | Sandstone | Nairn | |
| 8LB36 | Scotland | Sandstone | Thurso | |
| 11LB28 | Scotland | Sandstone | Ballochmyle | |
| 6RB37 | Mexico | Tuff | Oaxaca State | |
| 10LA38 | Mexico | Dacite | Mexico State | |
| 13LB29 | Italy | Limestone | Leghorn |