If you want to see a train running underwater, you just need to head to Kolkata. Here, the metro train runs beneath the Hooghly River. In THIS city, trains run at the speed of a cheetah, not above water, but below it, you have to descend 11 floors to travel in this train

Kolkata underwater metro: You may have seen trains running over rivers and even the sea (at Rameshwaram ). But if you’ve ever seen a train underwater, talking to the air, most people would be baffled. You may have the chance to witness it. This feat is happening not just elsewhere, but in India, where the first train is running in an underwater tunnel.

In Kolkata, the metro runs through an underwater tunnel built beneath the Hooghly River. This tunnel connects the Esplanade on the east bank of the Hooghly River and

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