What undersea railway tunnel, opened in 2013, runs through an immersed tube beneath the Bosphorus seabed to connect commuter rail lines between Europe and Asia?
Answer and explanation
Correct answer: B. Marmaray
- Step 1: Marmaray is an undersea railway crossing linking Halkalı in Europe to Gebze in Asia.
- Step 2: It features the world's deepest immersed tube rail tunnel at 60 meters below sea level.
Answer
Marmaray.
Why not the others: 'Eurasia Tunnel' is a double-deck road tunnel for motor vehicles beneath the Bosphorus opened in 2016; 'Channel Tunnel' links Britain and France; 'Great Istanbul Tunnel' is a planned three-level project.
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