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wads of grave fill with up to 40 mama each have been discovered around a 1,200 - year - old ceremonial site in Peru ’s Cotahuasi Valley .

So far , the archeologist have unearth seven tombs hold in at least 171mummiesfrom the web site , now called Tenahaha .

tenahaha, young woman�s skull, mummies

A burial of a young woman found in the middle of a tomb in Peru’s Cotahuasi Valley, where dozens of mummy-filled tombs were discovered.

The tombs are located on small-scale hills surround the site . " The numb , probably number in the low grand , tower over the support , " wrote archeologist Justin Jennings , a curator at Toronto ’s Royal Ontario Museum , in a chapter of the newly issue Word " Tenahaha and the Wari State : A persuasion of the Middle Horizon from the Cotahuasi Valley " ( University of Alabama Press , 2015 ) .

Before rigor mortis set in , the mummy had their knees put up to the grade of their shoulders and their arms folded along their chest , the researchers found . The corpses were then bind with rope and enwrap in bed of textiles . The mommy roll in eld from neonate fetuses to older grownup , with some of the youngest mummies ( such as baby ) being buried in jars . While awake the people seem to have lived in villages closely to Tenahaha . [ See Photos of the Peru Mummies and Tenahaha Site ]

bit and pieces of mummies

A human skull stares at the viewer. It is wrapped in thick cords and covered in an ancient textile. Its jaws hang open.

The mummified remains were in wretched shape due to equipment casualty from water and rodents . to boot , the researchers found some of the mummies were intentionally broken apart , their bones scattered and moved between the tombs . In one grave the scientist regain almost 400 isolated human remains , include tooth , hand and feet .

" Though many individuals were broken apart , others were left integral , " Jennings wrote in the Christian Bible . " masses were moved around the grave , but they sometimes remained bunched together , and even ground or rocks were used to divide some mathematical group and individual . " Some heavy goods were demolish asunder , while others were left intact , he say .

Understanding the selective destruction of the mummies and artifact is a challenge . " In the Andes , dying is a cognitive operation , it ’s not as if you lay to rest someone and you ’re done , " Jennings tell Live Science in an interview .

a picture of a woman�s preserved body in a grave

For case , the detachment and movement of the mummies may have help aver a sense of equality and community . " The breakup of the body , so anathema to many later groups in the Andes , would have been a powerful symbol ofcommunitas(a community of equals ) , " wrote Jennings in the book . However , while this idea help oneself explain why some mom were broken up , it does n’t explain why other mummy were left integral , Jennings tot up .

A change land

Radiocarbon dates and pottery analysis indicate the site was in utilization between about A.D. 800 and A.D. 1000 , with theIncarebuilding part of the web site at a later date .

Drawing of the inside of an ancient room showing two people taking drugs.

Tenahaha , with its storage room and unfastened - aviation inclosure for feasting and tombs for inhume the dead , may have helped village in the Cotahuasi Valley deal peacefully with the challengesPeruwas face . Archaeological research indicate that the villages in the vale were largely autonomous , each belike having their own leader .

Research also shows that between A.D. 800 and A.D. 1000 Peru was undergo tumultuous alteration , with population increasing , agriculture expand and stratum differences growing , Jennings said . At sites on the coast of Peru , archaeologist have found evidence for ferocity , with many people hurt cranial trauma ( blows to the head ) , Jennings said . Insome areas of Peru , scientist have found clayware containing drawings of fanged tooth and human trophy skulls ( skulls that could have been take in struggle ) the researchers note .

At Tenahaha , however , there is little grounds for furiousness against humans , and pottery at the web site is decorate with what wait like word-painting of people smile , or " well-chosen faces , " as archaeologists referred to them . [ Fight , Fight , Fight : The History of Human Aggression ]

Right side view of a mummy with dark hair in a bowl cut. There are three black horizontal lines on the cheek.

Tenahaha may have served as a " neutral ground " where mass could satisfy , lay to rest their dead and spread . As such , the site may have help facilitate the tenseness due to the changing world where these the great unwashed lived , Jennings say .

" It ’s a period of great change and one of the elbow room which humans around the world quite a little with that is through violence , " Jennings said in the interview . " What we are suggesting is that Tenahaha was place in part to share with those change , to detect a way outside of fury , to manage with periods of radical ethnic modification . "

archeological site at the site were carried out between 2004 and 2007 and involved a team of more than 30 people from Peru , Canada , Sweden and the United States .

an illustration of a decorated Maya altar

Front (top) and back (bottom) of a human male mummy. His arms are crossed over his chest.

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