These 'kofun' interment facilities were structured with a vertical style stone chamber, and burial goods were contained inside: Magical goods, mirrors, gems, swords, and stone objects in addition to iron farming tools.
埋葬施設は竪穴式石室で、副葬品は呪術的な鏡・玉・剣・石製品のほか鉄製農耕具が見られる。