Interior: The interior has the Yokoana-shiki sekishitsu, which was constructed of cut tuff stones, with the Sendo-bu passageway and the zenshitsu and genshitsu rooms, all which are located on the second tier.
埋葬部：2段目に切石造りの羨道部・前室・玄室を持つ凝灰岩の複室横穴式石室(全長約7.7m)