Deep in the Appalachian foothills of southeastern Ohio lies a brick-lined portal to another time—and possibly another dimension. Moonville Tunnel in McArthur stands as a moss-covered monument to a ...

Helen’s Bridge in Asheville, North Carolina isn’t just a picturesque piece of historic architecture—it’s a portal to the paranormal that has locals and visitors alike both fascinated and terrified.

National Geographic Explorer Paul Salopek has covered a lot of ground: some 14,000 miles — on foot — through 21 countries so ...

Today, the former Homestake Gold Mine, a 300-mile (480-kilometer) tunnel system carved inside the mountains, houses the ...

Lord Mann, the Government’s adviser on anti-Jewish hatred, calls for senior executives to be sacked over controversial Gaza documentary ...

The massive underground infrastructure project stretches nearly five miles from Glasgow Avenue to Foster Park, sitting 220 ...

The stone-walled passages are up to three metres high and were built to withstand cannon fire and other attacks common in ...

Pune: The Pune Metropolitan Region Development Authority (PMRDA) is set to appoint a consultant early next month to conduct a feasibility study for the proposed Yerawada-Katraj twin tunnel project ...

State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, P. R. China Mechanics and Civil Engineering Institute, China ...

PMRDA has invited proposals for appointing a consultancy agency to conduct feasibility study for the Yerawada-Katraj twin tunnel project Pune: The Pune Metropolitan Region Development Authority ...

At Hongyancun Station in Chongqing, the station is so deep underground that it takes 10 minutes and several escalators just to reach the platform. Located in the city’s Yuzhong District ...

“They’re one of a handful of people in the country who know how to do hypersonic wind tunnel ground testing. That’s a remarkable thing. They come out of here with their UTSA degrees and a very rare ...