The opening of all-weather Atal Tunnel on the Manali-Leh highway will help commuters bypass Rohtang to enable traffic movement during snow. This will also check the migration of people from Lahaul and Spiti during the harsh winter months.
Generally, 70 per cent of the people of Lahaul and Spiti would leave the district from November to April as they remained cut off from the rest of the world due to the closure of the 13,058-foot-high Rohtang Pass, the gateway to Lahaul on the Manali-Leh highway.