A 600-year-old mummy of a woman with her hands over her eyes and her face twisted in fear is just one of about 20 mummies that will soon go on display at the National Museum at Lima as part of the "Mysteries of the People of the Clouds" exhibit.
The woman's body was found in a hidden burial vault in the Amazon, and survived because of embalming methods employed by her tribe, the Chachapoyas, or cloud warriors, the Evening Standard of London reported.
Eleven other mummies were discovered in the vault, which was discovered 82 feet below the Earth's surface three months ago by a farmer in northern Peru.
They were thought to be one of the more advanced of the ancient South American civilizations, and ruled a kingdom from 800 AD to 1500 AD.
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Thought to be good fighters, their name comes from the Incan word for "clouds" and the Incans eventually conquered them.
While all record of the tribe was wiped out when the Incans were overcome by Spanish conquistadors, who landed in 1512, the Chachapoyas left a massive citadel called Kuelap behind, which contained more than 400 buildings, according to the Evening Standard.