The Atal Rohtang Tunnel, Himachal Pradesh|| It's importance for Tribal people of Lahul&Spiti|Kullu

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    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.[2][3] At a length of 9.02 km, it is the longest tunnel above 10,000 feet (3,048 m) in the world and is named after former Prime Minister of India, Atal Bihari Vajpayee.
    Thanking you
    PM Narendra Modi at the entrance to the Atal Tunnel
    The tunnel reduces the travel time and overall distance between Manali and Keylong on the way to Leh. The route, which previously went through Gramphu, was 116 km (72.1 mi) long and took 5 to 6 hours in good conditions. The traveller now reaches the South Portal of the tunnel from Manali, a distance of 24.4 km (15.2 mi) in about 50 minutes, goes through the 9.02 km (5.6 mi) long tunnel in about 15 minutes, and reaches Keylong which is 45 km (28.0 mi) away in about 60 minutes. The new route via the tunnel brings down the total distance travelled to 78.42 km (48.7 mi) which can be covered in about 2 hours and 5 minutes, a reduction of around 3 to 4 hours when compared to the earlier route. Moreover, the tunnel bypasses most of the sites that were prone to road blockades, avalanches, and traffic snarls.[5][6]
    The tunnel is at an elevation of 3,100 metres (10,171 ft) whereas the Rohtang Pass is at an elevation of 3,978 metres (13,051 ft). It was inaugurated by Prime Minister Narendra Modi on 3 October 2020. The cost of the entire project is ₹3,200 crore (US$438 million).[7]
    History Edit
    Prime Minister Narendra Modi inaugurating the Atal Tunnel in Manali, Himachal Pradesh on 3 October 2020. Along with Rajnath Singh, Jai Ram Thakur and Bipin Rawat
    Prime Minister Nehru discussed a rope way to Rohtang Pass with local tribes in 1960. Almost 39 years after, when Atal Bihari Vajpayee became the Prime Minister, locals suggested his childhood friend Arjun Gopal visit him to talk about Rohtang Tunnel. Gopal and two companions, Chhering Dorje and Abhay Chand, moved to Delhi. After a year of discussions, Vajpayee went to Lahaul in June 2000 and declared that the Rohtang Tunnel would be constructed.[8] RITES conducted a feasibility study.
    Direction board at Solang, showing the roads to Rohtang and Leh
    Atal Tunnel Approach Inauguration 26 May 2002 - Atal Bihari Vajpayee, PM of India and Lt. Gen. Prakash Suri, Director General Border Roads (DGBR)
    The commissioning of the access road construction for the Atal Tunnel by Atal Bihari Vajpayee on 26 May 2002
    In 2000, the project was estimated to cost ₹500 crore and be completed in seven years.[9] On 26 May 2002, the Border Roads Organisation (BRO), a tri-service organisation of the Defence Ministry specialising in road and bridge construction in difficult terrains, headed by Lt. Gen. Prakash Suri, PVSM, was put in charge of construction.[10] The approach road to the tunnel entrance was inaugurated by Atal Bihari Vajpayee.
    However the project did not move beyond the tree-felling stage by May 2003. By December 2004, the cost estimate had grown to ₹900 crore.[11] In May 2007, the government of Dr. Manmohan Singh awarded the contract to SMEC (Snowy Mountains Engineering Corporation) International Private Limited, an Australian company, and the completion date was revised to 2014. However, there was no progress for the next three years, until May 2010.[12]
    Finally, the Cabinet Committee on Security in UPA government cleared the Rohtang Tunnel Project. The work was awarded to a joint venture of AFCONS Infrastructure Limited, an Indian construction company of Shapoorji Pallonji Group, and STRABAG AG, Austria, in September 2009.[13] The drilling of the Rohtang Tunnel through the Himalayan ranges began on 28 June 2010 at the South Portal, 25 km (16 mi) north of Manali. Some of the anchoring and slope stabilisation work was subcontracted to Spar Geo Infra Pvt Ltd.
    Prime Minister Narendra Modi renamed the tunnel as the Atal Tunnel, in honour of Shree Atal Bihari Vajpayee, on 25 December 2019, Vajpayee's birthday.[8]
    The Rohtang Tunnel has been planned to ensure an all-seasons, all-weather road route to strategically important areas of Ladakh and the remote Lahaul-Spiti valley. However, the tunnel will provide this connectivity only up to Darcha, north of Keylong in the Lahaul region of Himachal Pradesh. Connectivity to Ladakh will require more tunnels: either at Shikun La, or at the passes located on the present Leh-Manali road.

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