LONGEST RAILWAY TUNNEL IN THE WORLD..!
The Seikan Tunnel is 53.85 km long tunnel in japan whose 23.3 km long portion is UNDER SEA BED..!!
It is 240m below sea level...!it connects 2 islands in japan..
The Seikan Tunnel is 53.85 km long tunnel in japan whose 23.3 km long portion is UNDER SEA BED..!!
It is 240m below sea level...!it connects 2 islands in japan..
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