Huascarán is all that is left of an extinct volcano. It has been getting smaller and smaller. As recently as 1970, the Ancash Earthquake caused a big part of the mountain to crumble and fall off. That part of the mountain was all rock and ice, and it killed almost 17,000 people in small towns around the mountain.
- NHK, "Huascaran: Highest Peak in the Tropics -- Peru, 6,768 m"; retrieved 2012-5-24.
- BBC, "On This Day, 11 January 1962: Thousands killed in Peru landslide"; retrieved 2012-6-14.