The Channel Tunnel is an undersea railway tunnel which connects the UK and France via Kent and Calais, beneath the English Channel. Having opened in 1994, it has the longest underwater section of ...

the underwater passage would span 190 kilometers, dwarfing the current longest tunnel in the world, the 68-kilometer section of the Chengdu metro, and the 38km Channel Tunnel, which cost $21.52 ...

Engineers are celebrating the 10th anniversary of the breakthrough of the Channel Tunnel, which established the first fixed link between Britain and Europe since the Ice Age. Here are 10 ...