Deepest & longest undersea train in the world, Subsea Tunnel, Marmaray underground underwater subway

Deepest & longest undersea train in the world, Subsea Tunnel, Marmaray underground underwater subway #MarmarayTrain #SubseaTrain #UnderwaterTrain #UndergroundTrain #UnderseaTrain #UndergroungSubway #DeepestTrainTunnel #DeepestMetroTunnel #DeepestMetroStation #IstanbulMetro #IstanbulUndergroundTrain #MarmaraySubway #MarmarayUnderseaStation #TahirTechnicalTv #TahirGul #Uskudar #Yenikapi #Kizkulesi #Gebze #Halkali #undergroungmetrotrain 00:15 Underground Metro Train in Istanbul 00:25 How deep is the Marmaray tunnel from the sea level? 00:42 How long is the Marmaray tunnel? 01:18 How long is the tunnel in Istanbul? 01:25 How length is the Marmaray train track? 01:33 How many stations are underground in the Marmara subway? 01:45 When Marmaray Tunnel was opened for passengers? 01:52 How many passengers travel on the Marmara train daily? 02:00 Can I use Istanbulkart for Marmaray? 02:05 How many Stops or stations are in the Marmara route? 02:15 How much time will take the