DEHRADUN: A comparison between the data received from the geological mapping of Dehradun in 2021 and the data compiled during a 2011 IIT-Roorkee study has revealed that landslide-prone areas in the Doon valley have increased from 20 to 100 over the last decade.
According to experts, human activities, including mining, deforestation and construction of buildings, led to the five-fold increase in vulnerable areas in the once-pristine landscape.
