Arunachal Pradesh: Geographical Significance and Strategic Infrastructure Expansion
Geography & Security · Saturday, 8 August 2026
Developments in Arunachal Pradesh highlighted its strategic importance along the Line of Actual Control (LAC) and rich biodiversity. India continues to strengthen border infrastructure, including the Sela Tunnel and Trans-Arunachal Highway, reinforcing sovereignty.
Quick highlights
- Shares international borders with Bhutan, China (Tibet), and Myanmar.
- Home to India's 101st Ramsar Site (Glaw Lake in Lohit district).
- Strategic infrastructure includes Sela Tunnel, Dibang Multipurpose Project, and Frontier Highway.
- McMahon Line serves as the effective border between India and China in the eastern sector.
Context
Official reviews underscored the dual priorities of environmental conservation and border infrastructure development in Arunachal Pradesh.
Key Facts
Arunachal Pradesh is India's largest state in the North-East by area. Major rivers include the Siang (Brahmaputra), Lohit, Subansiri, Kameng, and Tirap.
Significance
Border connectivity projects under Vibrant Villages Programme enhance border security, prevent population migration, and improve logistical readiness.
Exam Angle
Highly relevant for GS Paper I (Geography - North East India) and GS Paper III (Border Infrastructure, Internal Security).
Remember this
- Borders 3 countries: Bhutan (West), China (North/North-East), Myanmar (East).
- Brahmaputra is known as Siang/Dihang upon entering Arunachal Pradesh.
- McMahon Line drawn in 1914 at the Simla Convention.
- Sela Tunnel provides all-weather connectivity to Tawang.
- Glaw Lake is the first Ramsar site of Arunachal Pradesh.
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