Sela tunnel in Arunachal: PM Modi to inaugurate world's longest bi-lane tunnel at 13,000 feet! Top 10 facts, strategic benefits for military : vimarsana.com

Sela tunnel in Arunachal: PM Modi to inaugurate world's longest bi-lane tunnel at 13,000 feet! Top 10 facts, strategic benefits for military

India Business News: Sela tunnel is the world's longest bi-lane tunnel, constructed by the Border Roads Organization at an altitude above 13,000 feet, costing Rs 825 crore

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