Assertion: Now Lahaul-Spiti valley is connected to Manali throughout the year.
Reasoning: Pawan Hans Helicopters provide air transport in the area to ensure accessibility to the valley.
Answer & explanation
Correct answer: option 3
The World’s longest Highway tunnel — Atal Tunnel (9.02 Km) has been built by Border Road Organisation. This tunnel connects Manali to Lahaul-Spiti valley throughout the year. Earlier the valley was cut off for about 6 months each year owing to heavy snowfall. The Tunnel is built with ultra-modern specifications in the Pir Panjal range of Himalayas at an altitude of 3000 metres from the Mean Sea Level (MSL).