Underwater Metro Kolkata: Metro runs under water for the first time in India - Here is all you need to know
Underwater Metro Kolkata: Only senior officials and select engineers of Kolkata Metro were on board during the trial run, the first in the history of the nation.
The East-West Metro corridor connecting Howrah Maidan and Sector V, the Information Technology hub in Salt Lake, is partially operational - between Sealdah and Sector V stations. (Image credit: IANS)