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How does the Channel Tunnel connect England with France?

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The Channel Tunnel connects England and France via a 50-km (31-mile) rail system running beneath the English Channel. Stretching between Folkestone, England, and Sangatte, near Calais, France, it features the longest undersea portion of any tunnel in the world at 37.8 km (23.5 miles).12

The system consists of three tunnels: two for rail traffic and a central tunnel dedicated to services and security. It facilitates both freight and passenger transport through two primary methods:1
* Conventional Rail: Passengers travel in standard rail coaches.12
* Shuttle Service: Motorists can remain in their vehicles, which are loaded onto specialized, fully enclosed railcars for the crossing.132

The journey takes approximately 35 minutes. Since 2007, the Channel Tunnel Rail Link—also known as High Speed 1—has connected the tunnel to London, allowing high-speed trains to travel at up to 300 km (186 miles) per hour.12