10 May 2026
India launches first underground metro tunnel beneath Yamuna river
UPSC
SSC
Banking
Science
Summary
Delhi Metro inaugurated India's first metro tunnel below a major river — under the Yamuna, on the Phase 4 corridor (Tughlaqabad-Aerocity). Engineering feat with twin-tunnel boring machines at depth of 25m.
Why it matters
UPSC GS-3 (Infrastructure). Connect with PM Gati Shakti, Smart Cities Mission, urban mobility, DMRC achievements.