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Each circle is surrounded by the remains of buildings, storage pits and garbage dumps, and clay figurines, clayware and stoneware (including everyday pottery), stone swords and objects have been discovered.Although the form of the stone circles made have been based on the shape of circular settlements, there is no indication of permanent settlement on the site.The site has been submitted for inscription on the UNESCO World Heritage List as one of the Jōmon Archaeological Sites in Hokkaidō, Northern Tōhoku, and other regions
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