March 15 to be 'Red-Letter Day' for Indian Railways as Metro train to run through tunnel under Hooghly
Underwater metro..
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PM Modi travels with students in India's first underwater metro in Kolkata
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PM takes ride on India’s first underwater metro line in Kolkata with schoolchildren
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India's 1st Underwater Metro: Kolkata Underwater Metro- Live
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India’s First Underwater Metro Service to be inaugurated on March 6
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Watch: Strange feeling for the passengers as underwater metro runs coming up in India
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India's 1st underwater metro in Kolkata to be open by June 2023; Project on track after delays
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Watch: Kolkata To Soon Get India's First Underwater Metro
