In a feat of precise engineering, Mumbai on Thursday successfully completed a rare underground Metro tunnel overlap, with just 1.2 metres separating two major lines. The Mumbai Metro Red Line 7A tunnel passed over the operational Aqua Line 3, marking a milestone in the city’s expanding Metro network. The Tunnel Boring Machine (TBM) Disha, working on the Metro 7A corridor, pierced through final segment, completing its underground section.

The breakthrough event was attended by Chief Minister Devendra Fadnavis (in a maroon jacket) and other dignitaries. Pic/by special arrangement