Tunneling began at the lower portals of the Nevada tunnels in May 1931.

I will try to avoid tunnels as much as possible.

I will try to avoid tunnels as much as possible.

The line had 20 major tunnels and 158 bridges.

These macaques, as well as a labyrinthine network of tunnels, attract a large number of tourists each year.

There were light and ventilation, stashes, tunnelling equipment there.

On 24 February 1905, the two halves of the tunnel came together.

So for every kilometre of front there were two kilometres of underground tunnels.

Rodovia dos Imigrantes has 44 viaducts, 7 bridges, and 11 tunnels, along its 58.5 km stretch.

There are more than 185 miles of tunnels, and only about a mile is open to the public as a museum.

Nearby there's a French bunker, and the whole tunnel system is so complex that the two parties never met.

WFP food for work projects contributed to the cleaning of 1,500 kilometres of canals and 16,000 metres of karezes.

However, establishing an entire network of similar tunnels is just a part of the extensive measures that the government of Great Britain is planning to take to improve the atmosphere.

However, the primary motivation was to separate the stations from the tunnels, hence allowing substantial energy savings on station air conditioning and tunnel ventilation.

The beginning of World War II stalled the project in its early planning stages, although a few tunnels were dug that were later used in the Shinkansen route.

The biggest problem in this project was the mountainous landscape around Gravatá, so that it was necessary to construct a lot of bridges and tunnels.

The Rijeka Zagreb motorway has a total of 24 viaducts, 13 tunnels, 5 bridges, 45 underpasses, and 26 flyovers.

Such attacks would neutralize the Japanese tendency to fight from caves, which would increase the soldiers' exposure to gas.

One of the largest salmon tunnels in Norway ( long) is located at the Reinforsen waterfall, and was built in 1956.

Others say the impediment is the entire overgrown public sector and the solution is to cut tax rates. The latest view, endorsed by the European Commission, blames a shortage of infrastructure and proposes more bridges and tunnels.

The latest view, endorsed by the European Commission, blames a shortage of infrastructure and proposes more bridges and tunnels.

The most famous underground base of the Mujahideen and then the Taliban was Tora Bora this tunnel system went to a depth of 400 metres and had a length of 25 kilometres.

The two lines of the Malagasy railway, one of which is vital for the supply of provisions to the capital, have been damaged as a result of landslides, tunnel obstructions and track flooding.

The 600 m long boat trip through Divoká Gorge via several manmade tunnels and rocky galleries brings you to the Edmund Gorge with its artificial waterfall.

As early as the 12th century copper, tin and silver were being mined here, the miners leaving behind an endless labyrinth of mines and panning sites.

The first tunnel tube through the Mala Kapela mountain was completed in 2005, and was used for both directions of traffic until the second tube was completed in 2009.

Under the fortress, at a depth of 20 to 36 m below the surface, is an intricate network of corridors, shafts, a unique water treatment plant, ammunition warehouses, dining halls and barracks for the men.

Under the southern programme, 56 sub projects were implemented by non governmental organizations for the rehabilitation of over 1,023 kilometres of canals and karezes and the reconstruction of 227,800 cubic metres of structures.

At MlT, the idea of going and running around on roofs and tunnels that you weren't allowed to be in was not only a rite of passage, it was part of the MlT tour, and lockpicking was a winter course at MlT.

And to do that meant creating the flattest gradients that had ever yet been made, which meant building long viaducts across river valleys this is actually the viaduct across the Thames at Maidenhead and long tunnels such as the one at Box, in Wiltshire.

Now, this was back in the 19th century. And to do that meant creating the flattest gradients that had ever yet been made, which meant building long viaducts across river valleys this is actually the viaduct across the Thames at Maidenhead and long tunnels such as the one at Box, in Wiltshire.