Tunnels

photos taken on tours through this train tunnel which closed in 1861.

information about the Lötschberg base tunnel project.

how this tunnel was built in the 1920s.

facts and a diagram.

text of the United Kingdom Parliament Act.

profiles with photos.

learn how tunnels are constructed and about new tunnel technologies, and take a tour of tunnels around the world, including the world's longest.

operators of high speed transport system for tourist and freight vehicles between England and mainland Europe via the Chunnel.

tips for exploring them on foot.