World Top 10 Longest Underwater Tunnels BIGGEST Holes Ever Made 1 year ago   02:02

World Top 10 Longest Underwater Tunnels

1. Seikan Tunnel -- 53.9 km -Japan's Seikan Tunnel is the longest underwater tunnel in the world, and is located beneath the Tsugaru Strait. The tunnel connects Hokkaido Island with the Aomori Prefecture. The tunnel was constructed as the government's response to the unfortunate sinking of five ferry ships due to a typhoon back in 1954, which resulted in public outrage. As engineers saw that extreme weather conditions made bridges too risky, an undersea tunnel would be the safest way to go. The tunnel was completed in March of 1998, which saw the start of all railway transport using the tunnel.
2. Channel Tunnel -- 37.9 km-The Channel Tunnel Connects Folkestone in the United Kingdom to Pas-De-Calais, in northern France. It is owned by Eurotunnel, and has single direction tunnels where the national freight trains, Eurostar, and the Eurotunnel shuttle runs. A central service tunnel is connected to all of the lanes, which also provides access to maintenance and emergency teams. The service tunnel also provides a safety point in the event of an emergency, and passengers would need to be evicted. Special multi-functional vehicles were created for traveling within the service tunnel, designed to arrive at the scene or bring passengers to safety in record time.
3. Tokyo Bay Aqua line -- 15 km-The Tokyo Bay Aqua line is also recognized as a toll highway which spans the Tokyo Bay of Japan. The Tokyo Bay Aqua line opened to the public in December 1997, since planning and construction took 31 years. The tunnel connects Kisazaru City to Kawasaki City; and before the tunnel to cross both cities it required one to drive 100 kilometers along the Tokyo Bay; or to take a ferry.
4. Bomlafjord Tunnel -- 7.8 km-The Bomlafjord Tunnel is part of the Triangle Link Project, together with 3 other bridges designed to connect the islands of Stord, Bomlo, and Fittjar in Norway. The tunnel also forms three lanes of the European Road E39. Construction of the Bomlafjord Tunnel began in 1997, although plans had already been materialized since the 1980's. By 2011, the tunnel began receiving as much as 3,966 vehicles a day. Safety measures have also been integrated into the tunnel;
5. Eiksund Tunnel -- 7.7 km-The Eiksund Tunnel in Norway connects the mainland to Hareidlandet Island, and Eika island. Although it was intended to open to the public in July 2007, construction suffered numerous delays which caused it to open instead on February 2008. It was constructed and is operated by the Norwegian Public Roads Administration, and the same body is responsible for the tunnel's maintenance. The tunnel is divided into three lanes of traffic per day, with 1,000 vehicles crossing it, half of which are freight trucks.
6. North Cape Tunnel -- 6.8 km -The North Cape Tunnel is one of the longest underwater tunnels in Norway, and is located in the Nordkapp Municipality in the northern area of the country. It is located beneath the Magerøysundet strait, and connects Mageroya island to the mainland. It first opened to the public in June of 1999, but before that, a ferry had to carry passengers and freight across the seas from Honningsvag and Kajford. The North Cape tunnel is also a part of the European route E69.
7. Severn Tunnel -- 3.62 km-Located in the United Kingdom, the Severn Tunnel connects South Gloucestershire to Monmouthshire, beneath the River Severn. Construction of the Severn Tunnel was carried out from 1873 to 1886, by the Great Western Railway. Although the tunnel's construction was completed in 1885, it took 14 years before the tunnel could service goods trains and passenger traffic because pumping systems were still unfinished. Before the high speed 1 tunnels were built in London, the Severn Tunnel served as the country's longest mainline tunnel. 8. Vardo Tunnel -- 2.9 km-
9. Sydney Harbour Tunnel -- 2.8 km-The Sydney Harbour Tunnel became operational in August of 1992, and connects the Warringah Freeway to the Eastern Distributor as a means of decongesting the Sydney Harbour Bridge. It is operated by the Sydney Harbour Tunnel Company, but on August of 2022 it will be under public ownership. The tunnel is a twin-tube road tunnel, with two lanes in each direction. Three sections make up the tunnel: the 960 meter immersed tube structure
10. Thames Tunnel -- 0.4 km-The Thames Tunnel is the oldest underwater tunnel in the world and opened back in 1843. People came from across the globe to witness the Thames Tunnel, because it was the first tunnel to be built under a navigable river through the use of tunneling shield technology, which was new at the time. Located under the Thames River in London, United Kingdom; the Thames Tunnel connects the cities of Wapping and Rotherhithe. Although it was originally built for the purpose of horse-drawn carriages,

Comments 44 Comments

Robin Clay
Almost every tunnel in the world is under water, i.e. below the water-table. Discounting mines, and “networks” such as the London Underground, perhaps the longest single end-to-end tunnel in the world is still the 50-mile long 1970s Orange-Fish irrigation tunnel in South Africa. At one point, the face struck a water-bearing fissure which flooded a mile of tunnel in 24 hours, and affected borehole water levels up to 60 miles away.
Emelio Salazar
What I want to know is an ocean tunnel (like the English Channel tunnel) not a tunnel built underneath huge goodness of this video.
William Pavetti
Monitor–Merrimac Memorial Bridge–Tunnel 7.39 km. it is in Chesapeake Bay. seems anything in the western hemisphere was excluded from the list. there are others that would shove some off the list.
Wrong, the Seikan tunnel is only underwater for 23.3 km, the rest is not underwater.
The Channel Tunnel between France and the United Kingdom is it under the sea for 37.5 km and is the longest tunnel under water.
A lot of mistakes (both in video and the comment section)... hopeless
Black Swan
Crazy music, crazy video. MIN INFO NOT THERE, where are they located, some shots from inside?
Stop smoking so much hash
Lindsey M
What about the one in Texas?
Alex Fisher
Lincoln Tunnel is 2,4 km, and the Holland Tunnel is 2,5.
Quentin R
And also the Drogden tunnel under Öresund , 4050m long
Rocky Quincey
how do dig a tunnel under sea without it breaking up with the weight of the water
Smiley Kat
You should talk about it rather than putting pictures
Classdojo youtube channel
The Sydney Harbour Tunnel is 2.3KM!
per persen
what about the tunnel/bridge between Copenhagen and Malmo? about 4 Km
John Millett
the la fontaine tunnel in montreal is longer than thames tunnel
Swarda Bandiwadekar
true that +Asif lfas
Rosemary Parks
Please do not waste your time watching this video. It contains no information on any of the listed tunnels; instead, it provides only close-up shots of the tunnel entrances. The location of the tunnels is not even given, only their names. And according to multiple other comments, many underwater tunnels of comparable length were left out. This video is virtually worthless.
Asif Ifas
Idk if people are playing dumb or actually think we have glass tubes through the ocean we drive through lol.

Under water tunnel means a tunnel dug out much further down than the water level. So it's underground underwater.
Miracle Matheson
Prince Rasua Heru Ausar
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BIGGEST Holes Ever Made World Top 10 Longest Underwater Tunnels 1 year ago   10:19

Check out the biggest holes ever made by humans! This top 10 list of largest and deepest man made holes has some of the craziest holes you'll ever see!

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This diamond mine, located in Canada’s remote Northwest Territories is actually a pretty recent hole! Work only began on this thing in 2003, and it is one of the world’s preeminent sources of gem diamonds. Since mining operations began, it has produced over 100 million carats of diamonds!!

6. Berkeley Pit
Located in Butte, Montana, this copper mine is now filled with heavily acidic water. Opened in 1955, this mine was used to get copper out of the Earth. Ironically it closed on Earth day in 1982. In the 80’s Berkeley Pit was 1700 feet deep and 900 feet wide. Approximately 320 million tons of ore and over 700 million tons of waste rock were mined from the pit.

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This is a diamond mine, and one of the largest excavations in history. This mine in Russia is the 2nd largest man made hole in the world. Located in outside of Mirny, a small town in Eastern Siberia, this place is 1,722 feet (525 meters) deep, and 3,900 feet (1.25 kilometers) across.

4. IceCube Neutrino Observatory
There are many different ways to make holes in the Earth as you know, or will soon learn. But for the University of Wisconsin, they wanted to do a study of the Earth from a different perspective. They decided to go to Antarctica and drill a massive hole into the very ice caps of the Earth to see what's down there. Thus, the IceCube Neutrino Observatory was made.

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