On August 23, 2017, over 3 million cubic meters of rock erupted on Piz Cengalo. Eight pedestrians died and the residents of Bondo were devastated. Experts spoke of “the world’s rarest natural phenomenon”.
In August 2017, five days after the accident, trucks were carrying garbage in Bondo.
It was 9:30 am when the stone broke. On August 23, five years ago, more than three million cubic meters of debris fell from the north of Piz Cengalo 3,369 meters in Bergell to the valley. The Bondo landslide was one of the largest in Switzerland. Eight hikers lost their lives in Val Bondasca. More landslides and mudslides followed over the next few days.