THE Department of Public Works and Highways (DPWH) said on Sunday that it is pushing forward with the completion of the Philippines’ longest road mountain tunnel—a 2.3-kilometer twin-tube ...

Nestled deep beneath Norway's rugged mountains is a marvel of modern engineering: the Lærdal Tunnel, the world's longest road tunnel ... winding mountain roads, particularly dangerous in winter.

Norway currently boasts the title for the longest subaqueous road with its Lærdal Tunnel. At 15 miles long, it unites the ... opportunity to experience the mountain from both outside and in!

This terrifying road's nickname is "The road that ... chiseled into the mountain by local villagers. The Guoliang Tunnel is located in the Taihang Mountains in China's Henan Province, and was ...

Here's how the tunnel boring machine, or TBM, works: As the 200-ton TBM moves forward, a round cutter head studded with titanium teeth grinds into the tunnel face and splits large chunks off the rock.

The construction of a 14.2-kilometre long ... The Zoji La Tunnel, which is set to be the longest in Asia, will pass under the Zoji La pass in the Himalayas, the world's highest mountain range.