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The Eurotunnel connects Dover, England and Calais, France beneath the English Channel. The idea for a tunnel was first proposed in 1802 but wars prevented it from being built. Private companies started excavating in 1880 but stopped after digging 1800 meters due to security concerns from the English government. The completed 50.5 km tunnel with 38 km under the sea opened in 1994 and was built by over 13,000 workers from England and France. It is considered one of the modern engineering wonders of the world.









