this is 9.02 km. Long rohtang in himachal pradesh between manali rahaul spiti valley. PM narendra modi opend 3 july 2021. This is the longest in world. The infrastructer contruction with modern technology used as under tunnel networking imergency CC TU Cammera and other special organised at are formating. At the time to start for reality as it atal bihari bajpayee were PM. The startegic atal highway tunnel fortune for region and pemoted other to etc. 
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