A massive landslide blocked a national highway in north India, first with an earthen landslide followed by a gigantic boulder collapsing onto the road. <br /><br />Villagers travelling National Highway 21, which runs between Mandi and Chandigarh in the state of Himchal Pradesh, filmed the boulder collapse yesterday (November 21) from a safe distance. <br /><br />The state is known for suffering heavily from landslides and flash floods depending on the season.