Treasure dig threatens Bosphorus rail link By Sarah Rainsford BBC News, Istanbul The port has been uncovered at the site designated for a railway hub It's been called the project of the century: a mission to connect two continents with a $2.6bn rail-tunnel running deep beneath the Bosphorus Straits. The idea of linking the two sides of Istanbul underwater was first dreamt of by Sultan Abdul Mecit 150 years ago. See how the tunnel will cross the Bosphorus Now that Ottoman dream is finally being realised. But the modern version of that vision has hit a historical stumbling block. Istanbul...