Alternatives include the Seikan Tunnel in Japan's Tsugaru Strait, which held the world record until the completion of the 33.5-mile-long project in 1988. The Channel Tunnel, linking the UK and France, ...
Norway want to break its own record for the world's longest tunnel and has revealed its plans to erect a 16.5 mile-long underwater 'megatunnel' ...
The Seikan Tunnel in the Tsugaru Strait of Japan was the previous world record holder, gaining the title when the 33.5-mile-long construction project was completed in 1988. The Channel Tunnel that ...
A secret 1,000ft-long tunnel between the US and Mexico will be sealed after it was discovered earlier this month. US Customs and Border Protection (CBP) said its agents found a completed man-made ...