How the Chunnel Reconnected Britain to Europe: 1990 Engineering Marvel Discover the epic story of the Channel Tunnel, the 31-mile underwater tunnel that physically reconnects Britain and mainland Europe. On December 1, 1990, workers drilled the final breakthrough beneath the English Channel, completing a feat centuries in the making. With 13,000 workers, massive tunnel-boring machines, and $15 billion in construction costs, the Chunnel transformed travel forever. Today, Eurostar trains race thro