The Hashihaka Tumulus is about 160 meters in diameter, which corresponds to the Record of Japan in the History of Wei, which states, "When Himiko passed away, the Wajin made a large mound that was more than 150 meters long."
この箸墓古墳の後円部の大きさは直径約160mであり、「魏志倭人伝」の「卑彌呼死去卑彌呼以死大作冢徑百余歩」と言う記述に一致している。