India’s first underwater metro tunnel will be fully functional by 2023.

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The construction of the country's first underwater tunnel has started in Kolkata, West Bengal.

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It will provide metro connectivity from Kolkata to Howrah by 2023.

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Construction of the tunnel under the Hooghly River is underway and will be fully operational by 2023.

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The metro tunnel corridor is built 33 meters below the riverbed.

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According to an ANI report, Of the 16.6-km-long east-west stretch, 520 metres will be under the river bed of Hooghly river.

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The Kolkata East-West Metro line is being constructed by Kolkata Metro Rail Corporation (KMRCL).

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Almost 80 percent of the work of the East-west Howrah Metro station is completed.

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The upcoming underwater tunnel will provide a unique travelling experience for passengers.

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