Marmaray Documentary: Marmaray is a suburban line improvement project that will unite the European and Asian sides under the Bosphorus. It is completely different from Ankaray and Bursaray. Because Ankaray and Bursaray are a subway. Marmaray is a Eurotunnel railway project in the English Channel. However, they have connections to the Istanbul metro.
When the construction is completed Marmaray connected line 16 km throat crossing and European side HalkalıIt is planned to be approximately 76 km long, with the parts between Gebze and Harem on the Anatolian side. Railways of different continents will be combined with tube tunnels immersed under the Bosphorus. The Marmaray Project will have the deepest immersion tunnel in the world with the 60 meter.