Sangay volcano in Ecuador has collapsed twice in the past 250,000 years, unleashing debris avalanches that caused devastation over 60 kilometres away
Source:
https://www.newscientist.com/article/2265152-volcano-in-ecuador-can-trigger-avalanches-that-travel-60-kilometres/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home