11 Forgotten Underground Tunnels in the U.S. That Time Left Behind

The Blue Ridge Tunnel, Virginia

The Blue Ridge Tunnel in Virginia is a testament to the power of human ingenuity. Built in the 19th century, it was one of the longest tunnels in the world at the time. Today, the tunnel is abandoned, but its legacy lives on in the form of a hiking trail that takes visitors through the heart of the Blue Ridge Mountains.