英吉利海峡在英国和法国之间,最宽处241km,最狭处33km。其海底隧道又称为“欧洲隧道”。它横穿英吉利海峡最窄处,西起英国东南部港口城市多佛尔附近的福克斯通,东至法国北部港口城市加来,全长51km,其中海底部分长38km。修建这条海底隧道的计划早在19世纪初的拿破仑时代就已形成 The English Channel between Britain and France, the widest 241km, the most narrow 33km. Its undersea tunnel is also known as the “European Tunnel”. It crosses the narrowest point of the English Channel, west of Folkestone, near the southeastern port of Dover, in the east and Calais, a port city in the north east of France, with a total length of 51km, of which the seabed is 38km long. The plan to construct the tunnel was formed as early as the Napoleonic era of the early 19th century