Three Inca mummies found near the lofty summit of Volcán Llullaillaco in Argentina were so well preserved that they put a human face on the ancient ritual of capacocha—which ended with their sacrifice.
Now the bodies of 13-year-old Llullaillaco Maiden and her younger companions Llullaillaco Boy and Lightning Girl have revealed that mind-altering substances played a part in their deaths and during the year-long series of ceremonial processes that prepared them for their final hours.
Source: National Geographic. Read full article. (link)