Elon Musk’s Boring Company plans a privately funded tunnel in Nashville to connect downtown and the airport, promising ...

Nashville's District Energy System is more than 50 years old and pumps chilled water and steam to more than 40 buildings through an underground tunnel network. Metro Council member Olivia Hill ...

An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to exist. Ground-penetrating radar and laser scanning revealed that the ...

Researchers believe that the tunnel system was an underground representation of the above-ground street network of the ancient Incan city of Cusco. Located about 130 miles from Machu Picchu, Cusco ...

After centuries of speculation, archaeologists in Peru have confirmed the existence of an underground tunnel network, thought to have been built by the Incas. The groundbreaking discovery was ...

Downtown Oklahoma City was headed underground in 1973. The million dollar network of tunnels that would link more than a dozen buildings and connect with existing tunnels would be quite the ...

The three remained there until June 2024, when they were transferred to an underground tunnel, joining Omer Wenkert there. He remained there until his release.

The tunnels are about 4 feet wide and 5 feet tall, and protect a three-mile-long network of pipes that carry steam from UM's heating plant to every building.

Forty feet underground, the city's once-bustling system of freight tunnels remains. Social media videos show adventurers and thrill-seekers looking for the tunnels — but are they real?

The Incan Temple of the Sun in Cusco has long been a visual and cultural jewel of the ancient empire. But there’s even more ...

Researchers believe that the tunnel system was an underground representation of the above-ground street network of the ancient Incan city of Cusco. Located about 130 miles from Machu Picchu, Cusco ...