The Great Smoky Mountains are famous across the United States as an amazing place to get outside and enjoy nature. In fact, the Great Smoky Mountain National Park is so well-loved that it is ...

Subscribers may view the full text of this article ... project now being carried out in the West is a tunnel which is being driven into Palmer Mountain 8,400 feet, through 1,400 acres of mineral ...

Maybe that's because it's also one of the world's steepest roads, chiseled into the mountain by local villagers. The Guoliang Tunnel is located in the Taihang Mountains in China's Henan Province ...

The world’s longest tunnel is currently being built in China and it is expected to take a huge 15 years to be completed. Costing a huge £3 billion and running under 13 miles of mountains ...

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rehabilitate and upgrade the 19-mile-long Mountain Tunnel, a key component of the Hetch Hetchy Water System that takes water from Tuolumne County and sends it to San Francisco. The San Francisco ...