Railway Minister Mamata Banerjee has inaugurated the 6 kms strech of Kolkata Metro Railway from Tollygunge to Garia Bazar. It was announced in 1999. With the expansion, the 22.50 km distance between Garia Bazaar (the southern-most Metro station) and Dumdum (the last station located in the city’s extreme northern fringes) would be covered in just 41 minutes.

Some more points:
Tollygunge Metro station after late Bengali idol Uttam Kumar
Garia Bazar station was renamed after noted Bengali poet Kazi Nazrul Islam.