The Channel Tunnel, or “Chunnel,” is an incredible feat of engineering that connects the United Kingdom and France. It is a 50 km long underwater tunnel that is the longest undersea tunnel in the world. This incredible journey through history began in
From Wikipedia
The Channel Tunnel, sometimes referred to as the Chunnel, is a 50.46-kilometre (31.35-mile) railway tunnel beneath the English Channel which connects Folkestone in the United Kingdom with Coquelles in northern France. Opened in 1994, it remains the only fixed link between Great Britain and the European mainland.