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The underwater tunnel below the bed of Hooghly River connect two iconic Indian Railways stations – Howrah Junction and Sealdah which is a result of precise planning and meticulous execution. The twin tunnels were built in just 67 days while the budgeted time for tunnelling the 2.9km stretch was 127 days. Once operational, the service will revolutionise travel in Kolkata. ...
India’s first Underwater Metro Facility
