Through the years in England and France, the two countries need to connect with the train in the tunnel under the English channel, this is a challenge for the engineers, the British and France is one of the longest tunnels in the world, but must be secure.The channel tunnel was created by two teams of workers to dig out both sides of the channel. Work started in 1987, and both teams ran to the middle of the first tunnel. They use a large machine called the "Caterpillar penetration. ' The tunnel opened in 1994, nearly 1, 000 people working on the project. Today, the train travels through a tunnel at 160 kilometers per hour and it is possible to get from one end to the other in just 20 minutes.
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