Archaeologists have unearthed skulls of over 80 young women in the ruins of the largest neolithic Chinese city, suggesting they may have been sacrificed more than 4,000 years ago.
The skulls were found in two groups at the Shimao Ruins in northwest China's Shaanxi Province.
Majority of the skulls belong to young women, which suggests the outbreak of mass violence or ethnic conflict in the region since ancient people were prone to use their enemies or captives as sacrifices, scientists said.
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These skulls are likely related to the building of the city wall, suggesting that ancient religious activities or foundation ceremonies were organised before construction of the neolithic city began, state-run Xinhua news agency said.
Sun said the skulls will aid research on the religious thinking, construction concepts and cultural activities of people living along the Yellow River Basin over 4,000 years ago.
The Shimao Ruins were first discovered in 1976 in the shape of a small town, the report said.
Last year, archaeologists identified the ruins as the largest of their kind from neolithic times after measuring the exact size of the ancient stone city.
Built about 4,300 years ago, the city was abandoned about 300 years later during the Xia Dynasty, the first dynasty in China to be described in ancient historical chronicles.