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AI-drafted from public sources — may contain mistakes, especially specific dates, names, or claims. Only "Good to know" above is field-checked.
Historians say
The only road route to Tawang. The Sela Tunnel opened 9 March 2024 - 12.04 km on NH-13, two lanes, operator NHIDCL, work begun 15 October 2020. Wikipedia describes it as ensuring all-weather connectivity between Guwahati and Tawang and as the longest bi-lane tunnel in the world at 13,000 feet.