This 850-foot-long tunnel was once called the 8th wonder of the world

The 10-Story Limestone Tunnel That’s Become a Tourist Magnet

The Natural Tunnel starts with a massive limestone curved wall, seemingly inexplicably cut into the side of an otherwise normal and forested mountain.

From the creek bed below, the limestone walls tower about 300 feet high.

It wasn’t until the 1830s that the tunnel began to gather acclaim. By the 1850s, the railroad companies began to take notice and the idea of a Natural Tunnel route was formed.

The State Park is about more than the tunnel, however. It is in a truly stunning part of the country with rolling mountains and majestic views.

Find out MORE about the Natural Tunnel and the State Park