One of the best kept mummies ever found, La Doncella or The Maiden, is the mummy of a teenage girl who froze to death more than 500 years ago in the Andes Mountains. Her death was part of a ritual sacrifice in which, according to archaeologists, she and two other younger children were left on a mountaintop in the freezing cold as offerings to their gods.

The mummy was found in Argentina in 1999. "National Geographic Explorer-in-Residence Johan Reinhard, who co-led the expediction, described the discovery at the time as "the best preserved of any mummy I've seen." (National Geographic News)

La Doncella is displayed in a refrigerated, low-oxygen environment to mimic the high-altitude conditions it was found, which originally kept it in such quality. She was unveiled on September 6 at the High Country Archaeological Museum in Salta, Argentina. The two mummies also found will remain in storage for further study.