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Stone description: porous
| Wall Number | Country | State | Classification Sort descending | Source |
|---|---|---|---|---|
| 10RA22 | United States | Kansas | Limestone | Smoky Hill Reservation |
| 13LA36 | Hungary | Limestone | Margarethen Leitha Mts. | |
| 13RA43 | United States | Kentucky | Limestone | Hopkinsville |
| 6C | United States | Indiana | Limestone | ? |
| 10RA24 | United States | Kansas | Limestone | Armstrong |
| 13La45 | United States | Kentucky | Limestone | Frankfort |
| 13RA47 | United States | Alabama | Limestone | Rockwood |
| 2WE | United States | Texas | Limestone | Cedar Park |
| 8C | United States | Indiana | Limestone | Bloomington |
| 10LA18 | United States | Iowa | Limestone | Marshalltown |
| 11LA33 | United States | Ohio | Limestone | Lumberton |
| 12LA35 | United States | Indiana | Limestone | Spencer |
| 14LB28 | United States | Tennessee | Limestone | Davidson Co. |
| 16C | United States | Alabama | Limestone | Rockwood |
| 3C | United States | Texas | Limestone | Cedar Park |
| 7LA4 | Hungary | Limestone | Margarethen Leitha Mts. | |
| 10LA25 | United States | Kansas | Limestone | Greeley |
| 11Ra25 | United States | Kansas | Limestone | Cottonwood |
| 14LB37 | Hungary | Limestone | Margarethen Leitha Mts. | |
| 10RB14 | United States | Indiana | Limestone | Stinesville |
| 11RA27 | United States | Kansas | Limestone | Cottonwood |
| 13LB29 | Italy | Limestone | Leghorn | |
| 9RA3 | United States | Colorado | Limestone | Morrison |
| 12LB22 | United States | Kansas | Limestone | Junction City |
| 13RB39 | United States | Illinois | Limestone | Columbia |
| 7RA5 | Hungary | Limestone | Margarethen Leitha Mts. | |
| 12LB35 | United States | Indiana | Limestone | Bedford |
| 13RB42 | United States | Indiana | Limestone | Bedford |
| 7RA7 | Hungary | Limestone | Mannersdorf | |
| 12RA1 | United States | Indiana | Limestone | Bedford |
| 1WE | United States | Texas | Limestone | Cedar Park |
| 4LB12 | United States | Indiana | Limestone | Salem |
| 11LB22 | United States | Kansas | Limestone | Cottonwood |
| 14C | United States | Indiana | Limestone | Bedford |
| 14RA37 | Hungary | Limestone | Kroisbach | |
| 11LB22 | United States | Kansas | Limestone | Cottonwood |
| 13RA18 | United States | Iowa | Limestone | Vinton |
| 14RA38 | Hungary | Limestone | Margarethen Leitha Mts. | |
| 7C | United States | Indiana | Limestone | Bloomington |
| 8RA4 | United States | Tennessee | Limestone | Nolensville Pike |
| 12RA32 | United States | Indiana | Limestone | Salem |
| 14RA48 | United States | Texas | Limestone | Cedar Park |
| 12RA36 | United States | Kentucky | Limestone | Garrett |
| 13RA23 | United States | Kansas | Limestone | Augusta |
| 4RB12 | United States | Indiana | Limestone | Salem |
| 7LA10 | United States | Florida | Limestone | Key West |
| 9RA12 | United States | Iowa | Limestone | Iowa City |
| 12RB40 | United States | Alabama | Limestone | Turks Cave |
| 13RA24 | United States | Kansas | Limestone | Douglass |
| 14LA37 | Hungary | Limestone | Margarethen Leitha Mts. | |
| 7LB9 | Hungary | Limestone | Margarethen Leitha Mts. | |
| 11C | United States | Indiana | Limestone | Lawrence Co. |
| 14LA38 | Hungary | Limestone | Oszlopp | |
| 5C | United States | Indiana | Limestone | Lawrence Co. |
| 13RA35 | Spain | Limestone | Murcia, Murcia | |
| 14La48 | United States | Texas | Limestone | Cedar Park |
| 2c | United States | Alabama | Limestone | Rockwood |
| 8RA16 | United States | Indiana | Limestone | Ellettsville |
| 8RB15 | United States | Utah | Limestone | Ephriam |
| 9LA5 | United States | Missouri | Limestone | Barrett's Station |
| 10C | United States | Indiana | Limestone | Bloomington |
| 13RA36 | Hungary | Limestone | Breitenbrunn | |
| 8RB16 | United States | Wisconsin | Limestone | Madison |
| 9RA9 | United States | Iowa | Limestone | Tracey Station, Marion Co. |
| 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 |
| 6LA5 | United States | Pennsylvania | Sandstone | Scranton |
| 6RA16 | United States | Pennsylvania | Sandstone | Goldsboro |
| 6RB30 | United States | California | Sandstone | Alameda |
| 7LA39 | United States | New Jersey | Sandstone | Patterson |
| 7RA31 | United States | Colorado | Sandstone | Coal Creek |
| 8LB21 | United States | Ohio | Sandstone | Steubensville Jefferson Co. |
| 8RA23 | United States | Massachusetts | Sandstone | E. Long Meadow |
| 8RB20 | United States | Ohio | Sandstone | Middleburg Twp. Cuyahoga Co. |
| 9LA22 | United States | Ohio | Sandstone | Logan |