The second term of excavation to Hamin Mangha Site in April through November 2011 recovered 29 house foundations, 10 ash pits, three tombs and one surrounding ditch (moat), from which more than 100 pieces of potteries, jades, stone implements and artifacts made of bone, horn and shell were unearthed. Hamin Mangha Site is the largest and best preserved prehistoric settlement site found to date in Northeast China. The layout of the house foundations orderly arranged in rows is helpful for the studies on the prehistoric settlement patterns; the well preserved remains of wooden structure of the houses are the first prehistoric house roof structure discovered and recovered in China, which provided important physical evidence for the restoration of the prehistoric architecture; the numerous human remains found in the houses are also very rare in prehistoric archaeology.
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