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Archaeologists have unearthed the earliest man-made cave houses and privately-owned pottery workshops in China which date back 5,500 years.
After four years of excavation, a row of 17 cave houses were found on a cliff along the Jinghe River in northwest China's Shaanxi Province, Wang Weilin, deputy director of the Shaanxi Archaeology Institute and chief archaeologist of the excavation, told Xinhua.
They were built between 3,500 to 3,000 BC, near the Yangguanzai village of Gaoling county, 20 km away from the provincial capital Xi'an.
Wang said the row of houses are within a 16,000-square-meter site which is being excavated.
Each cave house, with an area of about ten square meters, was divided into two rooms. One was dug into the cliff side, the other, possibly made of wood and mud, was built on the outside of the cave, Wang said.