When it opened on July 4, 1930, it was the longest mountain tunnel ... Connecting the east entrance to the centrally located Zion Canyon, the Zion-Mount Carmel Tunnel is located along the Zion ...

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 ...

Today, L.A. Metro’s subway tunnels connect some of the city’s most densely populated neighborhoods. There are many other ...

The tunnel was designed by French engineer Claudius Crozet in the mid-19th century for the Blue Ridge Railroad to cross the mountain range ... lot to the trail entrance compared to the West.

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 ...