undersea tunnel
tunnel which passes under a sea for some portion of its extent
immersed tube
undersea tunnel composed of sunken linked prefabricated segments
East tunnel of the Great Belt Fixed Link
rail tunnel between the Danish islands of Zealand and Sprogø
Channel Tunnel
rail tunnel beneath the English Channel between France and Great Britain
Eurasia Tunnel
road tunnel in Istanbul, Turkey
Taiwan Strait Tunnel
planned undersea rail tunnel
Great Istanbul Tunnel
road/rail tunnel under the Bosphorus
Eastern Harbour Crossing
2nd road and rail tunnel across Victoria Harbour, Hong Kong
Western Harbour Tunnel
road tunnel in Sydney, Australia
Helsinki-to-Tallinn Tunnel
planned undersea rail connection between Finland and Estonia
Atlantic Ocean Tunnel
road tunnel southwest of Kristiansund, Norway
Cross-Harbour Tunnel
tunnel in Hong Kong
Kawasaki Port Tunnel
undersea tunnel in Kawasaki ward, Kawasaki, Japan
Havana Tunnel
Havana Tunnel under the Havana Bay was built by the French company Societé de Grand Travaux de Marseille between 1957-58 paid for by the Batista government.
China-Korea Undersea Tunnel
proposed tunnel connecting the Shandong peninsula (China) to the Korean peninsula