Infromation from the GNIS database. Originally was a railroad tunnel.
| Name | Nada Tunnel |
| Rock Layer | Corbin Sandstone Member of Grundy Formation: Sandstone | conglomeratic sandstone | conglomerate | minor shale |
| Type of Tunnel | Road |
| Latitude | 37.817028 |
| Longitude | -83.68102399999999 |
| Tunnel Owner | USDA |
| Name of Land | Daniel Boone National Forest |
| County | Powell |
| Submitted by | GNIS |