With India's First Underwater Tunnel, Kolkata East West Metro to Ferry 1 Million People Daily by 2035

The 520-metre twin tunnel, one east-bound and the other west-bound, is built 30 metres below the riverbed. Commuters will be under the river for only about a minute when the train passes through the tunnel at 80 km per hour.

from Top India News- News18.com https://ift.tt/30XxsLC