This book follows the history of how the Mersey Tunnels came about, details of their construction and, unlike any tunnel projects before, how the first tunnel (Queensway) was excavated by hand, as no tunnel of comparable diameter had been built before. Nothing existed to match its length or its complexity, so it was known at the time as the 8th Wonder of the World. The Queensway has provided shelter in times of war and both tunnels are an integral part of the success of the region, and will remain so for many years to come.