The deadliest rock slide and avalanche disaster in recorded history occurred on May 31, 1970, on Mount Huascarán in Peru, where an immense earthquake triggered a colossal rock, ice, and debris avalanche that buried the entire town of Yungay and nearby communities. The catastrophic event resulted in an estimated 22,000 human fatalities. In terms of pure massive rock slides and tectonic collapses globally, historic events like the 1920 Haiyuan landslide in China caused an even greater death toll of approximately 200,000 lives due to extensive earthquake-induced mountain failures.
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