New Delhi, June 25 -- The Delhi Metro Rail Corporation (DMRC) has achieved a significant milestone in the ongoing Phase 4 expansion by completing a major underground tunnelling task between Kishangarh and Vasant Kunj stations on the Tughlakabad-Aerocity corridor of the Golden Line.

The breakthrough was achieved when a Tunnel Boring Machine (TBM) completed its journey this morning at Vasant Kunj Metro Station after constructing a 1,550-metre-long tunnel, using a 91-metre-long TBM.

The DMRC took to social media to announce about this development. In a social media post on X, it stated, "DMRC Completes another Major Tunnelling Milestone on Phase 4 Golden Line; Breakthrough at Vasant Kunj Metro Station. The Delhi Metro Rail Corporation (DMR...