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Kolkata Creates History, Becomes First Indian City To Get... | Collector
Kolkata Creates History, Becomes First Indian City To Get...
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Kolkata Creates History, Becomes First Indian City To Get...

Kolkata gave India its first metro in 1984. Forty years later, it did it again — this time, 30 metres below the Hooghly river. Here's how India's first underwater metro came to be.

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