19. The Mt. Huascaran Avalanche

Photographer: U.S. Geological Survey

Year: May 1970

Location: Yungay, Peru

Casualties: 20,000

The epic 1970 avalanche that crashed down from the top of Mt. Huascaran in Peru occurred when huge areas of ice and snow were dislodged by the Ancash/Great Peruvian earthquake. Like the 1962 avalanche before it, the snow took the entire city of Yungay and its 20,000 residents in its clutches. Even the photo looks like a giant hand of ice smothering the city.