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

The Hoosac Tunnel, Massachusetts

The Hoosac Tunnel in Massachusetts is a marvel of engineering and a testament to human tenacity. Built in the 19th century, the tunnel was a crucial part of the region's transportation network. However, its construction was plagued by accidents, earning it the nickname "The Bloody Pit". Today, the tunnel is abandoned, but its legacy lives on.