In the Iwatoyama Tumulus (keyhole-shaped mound), regarded as a tomb of Iwai, Tsukushi Province, Yame County, Fukuoka Prefecture, the place called gato where rituals and politics were performed, and the stone figure of a judge called tokibe are located.
福岡県八女郡、筑紫国磐井の墳墓とされる岩戸山古墳（前方後円墳）には、衙頭（がとう）と呼ばれる祭政を行う場所や解部（ときべ）と呼ばれる裁判官の石像がある。