Severn Tunnel

The Severn Tunnel is a railway tunnel in the United Kingdom that runs under the River Severn. It is located 15 miles downstream from the Severn Bridge, connecting South Wales and England. The tunnel is crucial for rail traffic, especially since the destruction of a railway bridge between Sharpness and Lydney in the late 1960s.1

The River Severn itself is Britain's longest river, flowing approximately 180 miles from its source in Wales to the Bristol Channel. The area around the river became an industrial hub, and the need for reliable crossings, like bridges and tunnels, became apparent for transporting materials. While the Channel Tunnel connects England and France under the English Channel, the Severn Tunnel is a vital link within the UK for rail transport under a major river.123