The UK and France are about 21 miles apart at their nearest point. However, the 3 tunnels are 35 miles long as they run to terminals inland at Folkestone and Calais.
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The Channel Tunnel is made of three separate tunnels running parallel to each other. One train tunnel running south (UK to France), one train tunnel running north (France to UK) and one service tunnel. All three tunnels were drilled below the seabed and link Folkestone in Kent to Coquelles in Pas-de-Calais.
France is home to over 60 tunnels of over 1,000m in length; four of those are over 10,000m in length and are often cited as modern engineering marvels. We've compiled a list of the most impressive tunnels, from the ground-breaking Channel Tunnel to the Mount Blanc Tunnel, an architectural feat.
The Laerdal Tunnel in western Norway is the longest road tunnel in the world. It takes about 20 minutes to pass through the tunnel. Brightly colored lights placed every six kilometers help drivers stay alert.
1 – Lærdal, Norway, between Lærdal and Aurland: measuring 24.51 kilometres in length, built in 2000. 2 – Yamate Tunnel, Japan, in Tokyo: measuring 18.2 kilometres in length, built in 2015. 3 – Zhongnanshan Tunnel, China, in Shaanxi: measuring 18.04 kilometres in length, built in 2017.
In cooperation with Rönesans Holding, the Heitkamp Construction Swiss GmbH tunnel and railroad construction specialists constructed the world's longest and deepest tunnel, the Gotthard Base Tunnel. This 57 kilometre-long tunnel lies at a depth of 2,300 metres.
The carriage is lit and there are toilet facilities available. You can get out and walk around, but there is nowhere to go. Toilets are fine. You mustn't smoke or take flash photos because they have smoke and flash detectors that are very sensitive and can stop the train.
Generally speaking the ferry is usually slightly cheaper, but whichever option you choose, make sure to shop around for deals and book well ahead of time to get the best-value fares.
You cannot travel as a foot passenger, but you are able to take a bicycle. If you don't need or want to drive your vehicle for your trip, you can travel as a foot passenger on Eurostar.