Semi-circular flat chipped stone tools

Time Period
Excavation Report Sannnai Maruyama Site,Volume 8
Excavation Report Figure No.
Size
Cultual Property Designation Important Cultual Properties
Current Location
Explanation This is a half-moon shaped stone tool made by hammering out the perimeter of a flat stone. It may have been used to break plants into small pieces, but this is not known well. They are distributed mainly in Aomori and from western Hokkaido to the northern Tohoku region.