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06, Feb 2025
TNPSC Group I Topper Corner
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India's first underwater train – Kolkatta

August 17 , 2019 2000 days 2335 0
  • India's first underwater train project in Kolkata is almost complete.
  • The rail route is under Hubli river.
  • This 16-kilometer long Kolkata Metro project will connect Salt Sector 5 with Howrah Maidan.

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