The Atal Tunnel, also known as the Rohtang Tunnel, is a highway tunnel in the shape of a horseshoe that cuts the travel time between Manali and the Lahaul-Spiti valley by about four to five hours.
The tunnel, which is over 10,000 feet long and named for former prime minister Atal Bihari Vajpayee, is built beneath the Rohtang Pass in the Pir Panjal hills. The valley, which is typically landlocked in the winter, may now be accessed thanks to an all-weather tunnel. Visitors enter Sissu, which is encircled by towering peaks, via the North End of the tunnel.
In order to give the Lahaul-Spiti Valley, which was cut off from the outside world for over half the year due to excessive snowfall, year-round road access, the concept of a tunnel beneath the Rohtang Pass was originally put forth in the 1980s. But the idea didn’t really pick up steam until 2000, when Atal Bihari Vajpayee took over as leader. Since the route to Leh-Ladakh is essential to preserving defence readiness at the northern frontiers, he understood the strategic significance of such infrastructure for both the military and the civilian population.
The Border Roads Organisation (BRO) oversaw the start of the Atal Tunnel’s construction in June 2010. Even though the project had many obstacles, including as rough terrain, severe weather, and frequent avalanches, it was finished in almost ten years. Prime Minister Narendra Modi opened the tunnel on October 3, 2020.
The main issue that the tunnel resolves is the removal of the hazardous and erratic Rohtang Pass route, which was frequently closed because of winter snowfall and monsoon landslides. For the advantage of residents, visitors, and the Indian military, the tunnel makes it possible to travel to Lahaul-Spiti and Leh throughout the year.
The best time to visit the tunnel and take in the surroundings is during the summer, which runs from March to June. Enjoying outdoor activities in Solang Valley and Lahaul-Spiti is made easier by the favourable weather.
Autumn (September to November): This is another ideal time of year to travel because of the clear skies and pleasant temperatures.
Winter (December to February): The road may be temporarily closed due to severe weather, however the tunnel stays open even during periods of heavy snowfall, giving access to Lahaul-Spiti’s snow-covered landscapes.