The shortest way between A and B is a direct line but sometimes mountains have to be bored through for it. Life aboveground is crowded. Tunnels are the best solution to handle traffic and they provide passage in places unsurmountable. Whether burrowed through mighty mountains or laid under the sea the most impressive tunnels of world are presented by Popular Mechanics.
1)Marmaray Tunnel, Turkey
Connecting Europe to Asia, Marmaray- named after the Sea of Marmara has a maximum depth of 55 meters. The tunnel was put into service in 2013 and it is the longest underwater tunnel of the world. Instead of crunching through the sole, the engineering team used immersed tube strategy to assemble parts of tunnel on the surface and then sink them. The tunnel is made flex and bend to react if an earthquake hits. Also the project delays for 4 years due to the findings of Byzantine-era such as city’s largest harbour, the 4th century ‘Harbour of Theodosius’.
2)Gotthard Base Tunnel, Switzerland
Alps in Switzerland are being caved for 20 years for this tunnel. Expected to be opened on 1st of June, 2016, it will be the longest and deepest rail tunnel of the world. It is the first flat low-level route through the Swiss Alps. It will provide a faster connection between Switzerland and Zurich – Milano journey time for passenger trains by about an hour.
3)Tunnel of Love, Ukraine
The main purpose of this rail is to move timber to a factory near Kleven. But this operation is performed only 1-2 times a day. It draws attention of tourists and lovers. The tunnel offers a simple kiss inside the forest with an incredible view.
4)Bund Sightseeing Tunnel, China
This psychedelic tunnel don’t have an extraordinary engineering or historical significance. What it has is dizzling view through the tunnel. It allows passengers to cross the Huangpu River with psychedelic lightning and blaring music. If you want to get high try to travel through this sub-surface tunnel with the altitude of 2,000 feet (610 meters).
5)Large Hadron Collider, France / Switzerland
Actually it is not a real tunnel but a ring. It deserves the place on the list with a depth of 570 feet (170 meters) and it is about discovering Higgs Boson, one of the most important physics experiment of 21st century.
6)Tokyo Bay Aqua Line, Japan
The most interesting fact of this tunnel-bridge hybrid structure is that it has its own manmade island on the way. It connects the industrial cities of Kawasaki and Kisarazu instead of travelling around Tokyo Bay. The bridge runs to manmade Umihotaru Island and then train transit into a tunnel that continues for the next 6 miles (10 kms) about 200 feet (60 meters) under the water.
7)Hezekiah’s Tunnel, Israel
Historic! Excavated during the reign of King Hezekiah in the 8th century B.C., this incredible tunnel with 1,750 feet (530 meters) lenght was constructed to provide fresh water into Jerusalem even during attack.
8) Guoliang Tunnel Road, China
This risky transportation way created to built a better way to access the village of Guoliang in eastern China by excavating rocks on the cliffs. At about 15 feet (4.5 meters) high and 12 feet (3.5 meters) wide, driving may be too risky but it is a truth that the tunnel offers quite awesome sightseeing.