Bengaluru Metro's sixth tunnelling machine launched from Jayanagar Fire Station to Dairy Circle For the 13.92-km underground stretch between Dairy Circle and Nagawara, the work has been divided into four packages for speedy completion. Share Via Email | A+A A- Bengaluru Metro's sixth tunnel boring machine launched 60 ft below the ground of Jayanagar fire station on Friday evening. (Photo| EPS) Express News Service BENGALURU: In the midst of the all-round slump in activity all around due to the second COVID wave, a major infrastructure work kickstarted 60 feet below the ground on Friday evening. The tunnelling operations of Bengaluru Metro's sixth Tunnel Boring Machine (TBM) launched for the 600-metre distance from the Jayanagar Fire Station (South Ramp) to Dairy Circle.