SESSION 3 – Stone tool production and processing techniques
Stone tools have traces of the knappers' habit

The purpose of this study is to clarify the structure and the group of the settlement sites of the Middle Yayoi period in Japan. The Yayoi period is the time when rice growing began in Japan and is about 2000 years old. Today, it is said that the village of the Yayoi period composes one village because plural groups live in the neighborhood. It is a unity of plural buildings to be regarded as important for the authorization of this group and assume them one unit it in near relation group. This group is labeled the “fundamental group”. But I wonder if the group is really one group? This study makes questions whether one fundamental group in the Yayoi settlement sites consists of one group or several groups.