最早海底隧道

最早的水底隧道是英國的泰晤士隧道， 於1825年開始興建， 於1842年完成。




圖片參考：http://upload.wikimedia.org/wikipedia/commons/thumb/7/71/Thamestunnel1840.jpg/250px-Thamestunnel1840.jpg



圖片參考：http://en.wikipedia.org/skins-1.5/common/images/magnify-clip.png
Cutaway illustration of the Thames Tunnel excavation as it was probably around 1840








The Thames Tunnel, built by Marc Isambard Brunel and his son Isambard Kingdom Brunel and opened in 1843, was the first underwater tunnel and the first to use a tunnelling shield. Originally used as a foot-tunnel, it is now part of the East London Line of the London Underground.

http://en.wikipedia.org/wiki/Thames_Tunnel