Planned or Proposed Tunnels: Orkney, Japan-korea Undersea Tunnel, Clem Jones Tunnel, Second Harbour Crossing, Auckland, Irish Sea Tunnel

Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Orkney, Japan-korea Undersea Tunnel, Clem Jones Tunnel, Second Harbour Crossing, Auckland, Irish Sea Tunnel, Cross-Harbor Rail Tunnel, Gotthard Base Tunnel, Airport Link, Brisbane, North-south Rail Link, Long Island Sound Link, Strait of Gibraltar Crossing, Stonehenge Road Tunnel, Brenner Base Tunnel, Busan-Geoje Fixed Link, Sakhalin Tunnel, Tusker Tunnel, Carmel Tunnels, Nam Wan Tunnel, Newfoundland-Labrador Fixed Link, Helsinki to Tallinn Tunnel, Stockholm City Line, Oosterweelconnection, Västlänken, Ferny Creek Trail, Ceneri Base Tunnel, City Tunnel, Malmö, La Línea, Perthus Tunnel, Taiwan Strait Tunnel Project, Sakhalin-hokkaidÅ? Tunnel, Underwater Artery, Thessaloniki, Mont D'ambin Base Tunnel, Fourth Harbour Crossing, Hong Kong, Deer Creek Tunnel, Strait of Sicily Tunnel, Orkney Tunnel, Marrickville Tunnel, Concordia Tunnel, Zimmerberg Base Tunnel, Rogfast, Hordfast, Wienerwaldtunnel, Bornholm Tunnel. Excerpt: Orkney (Scottish Gaelic: ) also known as the Orkney Islands (and sometimes incorrectly as "The Orkneys"), is an archipelago in northern Scotland, situated 16 kilometres (10 mi) north of the coast of Caithness. Orkney comprises approximately 70 islands of which 20 are inhabited. The largest island, known as the "Mainland" has an area of 523.25 square kilometres (202.03 sq mi) making it the sixth largest Scottish island and the tenth-largest island in the British Isles. The largest settlement and administrative centre is Kirkwall. The name "Orkney" dates back to the 1st century BC or earlier, and the islands have been inhabited for at least 8,500 years. Originally occupied by Mesolithic and Neolithic tribes and then by the Picts, Orkney was invaded and then annexed by Norway in 875 and settled by the Norse. It was subsequently