The Big Savage Tunnel, a key section of the Great Allegheny Passage, is now open for the summer season. The reopening, ...

The project will, in fact, be the world’s longest road and rail tunnel, and the world’s longest immersed tunnel. As an “immersed” tunnel, instead of being dug through solid land mass like ...

Built in 1876, the Hex River Tunnel is believed to be South Africa's oldest railway tunnel ever built. Accessible only by 4x4 vehicles, the journey involves navigating scraggly dirt roads ...

An aerial drone photo taken on March 17, 2025 shows the Banyou No.1 Tunnel along the Xining-Chengdu railway in Ruoergai County of Aba Tibetan and Qiang Autonomous Prefecture, southwest China's ...