Workers in Istanbul are currently excavating a rail tunnel underneath the Bosphorus. Like the Chunnel linking France and England, only this one will link the continents of Asia and Europe.
The 2.6 billion dollar project began in 2004 and almost immediately encountered a major archaeological roadblock in the form of the 4th c. port of Eleutherios harbour where a railway hub was supposed to go.
Since then, they’ve found enormous piles of stuff, including over 30 shipwrecks transporting material from far and wide. These discoveries are writing a whole new chapter in the history of Byzantine trade.
Keep in mind that these shipwrecks are the first ever found in Istanbul, despite its fortuitous location straddling two seas.
For more on the Bosphorus finds, see this AFP story: