Marmaray: Denizin 60 Metre Altındaki 150 Yıllık Hayal

The world's DEEPEST immersed tube tunnel connects two continents 60 meters under the Bosphorus. Dreamed by an Ottoman sultan in 1860, built with 18,000-ton concrete segments lowered to the seabed with millimeter precision, engineered to survive earthquakes just 16 km from a major fault — and during excavation, a 8,500-year-old settlement and 37 ancient shipwrecks were discovered at Yenikapı. This is the full story of Marmaray: the engineering, the earthquake design, the sultan's dream, and the history found underground.