Blue Mt. & Kittatinny Mt. Tunnels, Pennsylvania Turnpike
Additional Details:
| View from within Blue Mt. Tunnel (4339 ft. long) looking westward toward entrance of adjacent Kittatinny Mt. Tunnel (4727 ft. long). The Pennsylvania Turnpike crosses the full range of the Appalachian Mountains by a series of seven tunnels, the longest one of which is over a mile in length. |
