Atal Tunnel (also known as Rohtang Tunnel)[1] is a highway tunnel built under the Rohtang Pass in the eastern Pir Panjal range of the Himalayas on the Leh-Manali Highway in Himachal Pradesh, India.At a length of 9.02 km,it is the longest highway single-tube tunnel above 10,000 feet (3,048 m) in the worldwhen completed and is named after former Prime Minister of India, Atal Bihari Vajpayee.With the existing Atal Tunnel and after the completion of under-construction Shingo La Tunnel,which is targeted to be completed by 2024 and the Nimmu–Padum–Darcha road routes will become all-weather roads.
Work begun28 September 2008
Opened12 December 2020
Length9.02 kilometres (5.60 mi)
Operating speed40–60 km/h (25–37 mph)