Indias First under water Train and deepest most deepest metro have been developed to be functional by 2023.


This is one of a kind underwater metro train which is built in India and is being compared to Eurostar which joins London and Paris. The Kolkata Metro Rail Corporation (KMRC) has made a way to pass under the Hooghly River. The East and West corridor will be connected via this twin tunnel over 500 meters. The train will be 13 metres below the Hooghly River.