A massive pile of human skulls discovered on the site of a former lake in Mexico may point to signs of ancient human sacrifice, according to findings published in the journal Latin American Antiquity. The 1,100-year-old remains were discovered in an empty field that used to be Lake Xaltocan, outside the ancient kingdom of Teotihuacan. While the Teotihuacan and the later Aztec cultures both practiced human sacrifice, they did so at monuments or in major cities. Lake Xaltocan was not associated with any of the major regional kingdoms, suggesting that the ancient culture that lived here practiced "a big event in a little place," said one archaeologist.
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