Deodar trees in picturesque Sangla valley of Himachal`s Kinnaur district have unfolded a shift from wetter spring conditions during Little Ice Age (LIA) to progressive drier conditions since 1757 AD with noticeable increase in spring drought years in recent decades.

A study conducted by the Birbal Sahni Institute of Palaeosciences (BSIP), an autonomous institute of the Department of Science and Technology (DST), following rock fall incidence near Batseri village in the district in July 2021, in which several deodar trees were damaged, analysed factors responsible for the geohazard activities to enable better prediction of future hazard events to support early warning systems.