OKC Mayor Patience Latting described the city's underground Metro Concourse network as "the largest pedestrian tunnel system ...

Chessie officially completed her journey, successfully exiting the receiving pit on Two Island on Wednesday. Chessie reached ...

An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to ...

In a twist worthy of a Renaissance mystery, Leonardo da Vinci's sketches have revealed hidden secrets beneath the Sforza ...

Take “bat tunnels”, the structures designed to help bats safely navigate developments which recently drew the chancellor’s ...

An incredible 5,750-foot tunnel system has been found beneath an ancient capital city. Chinkana, meaning labyrinth, is an archaeological site beneath the city of Cusco in Peru, which was the ...

Mexican authorities have begun filling in an underground smuggling tunnel that stretches from Juarez to South Central El Paso ...

The RRWT offers significant advancements over traditional wind tunnels. By simulating both wind and road surface speeds up to ...

Mexican authorities have begun filling a tunnel crossing the border with the U.S. that experts say was likely used to smuggle ...

Chennai Metro Rail to monitor vibrations and settlements in tunnels and stations during elevated corridor construction for ...

Chicago police are searching for four suspects after two female victims were robbed in the Chicago Pedway underground tunnel ...