INFO:
The city metro is constructing 40.1 km of new underground corridors as part of its Phase-IV expansion. Officials stated that these underground corridors feature the longest tunnelling operations in DMRC's history in Phase-IV. Read more to learn the details of the story., Delhi News News - Times Now
Delhi Metro Phase 4 Expansion Underway; 3 New Underground Corridors To Come Up-Check List of Stretches | Times Now