Three Inca mummies found near the lofty summit of in Volcán Llullaillaco 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.

Under biochemical analysis, the Maiden's hair yielded a record of what she ate and drank during the last two years of her life. This evidence seems to support historical accounts of a few selected children taking part in a year of sacred ceremonies—marked in their hair by