SunderlalBahuguna helped to start the 'Chipko movement' in
1973
Chipkomovement was started in 1973 spontaneously in Uttar Pradesh, in an effort to save trees and forests from falling by forest contractors.SunderlalBahuguna helped bring the movement to prominence through about 5,000-kilometer trans-Himalaya march undertaken from 1981 to 1983, travelling from village to village, gathering support for the movement.