New Delhi, Nov. 25 -- The Delhi Metro Rail Corporation (DMRC) is set to begin work on construction of underground tunnels to connect metro stations for the upcoming Phase-4 Green Line extension from Inderlok to Indraprastha. The corporation has floated a tender for the project. The four metro stations mentioned currently in the tender are New Delhi, Delhi Gate, Delhi Sachivalaya - IG Stadium, and Indraprastha. The document further said that the work will be completed within 42 months after the tender is awarded. Union Cabinet chaired by Prime Minister Narendra Modi had approved two new corridors of Phase-4 of the Delhi Metro in March last year, which included the 12.3km extension of the Green Line from Inderlok to Indraprastha. The last da...