On the inner wall of the stone chamber, figures of two animals, a person on horseback shooting an arrow, four persons outstretching arms and legs and holding hands with each other and three persons holding articles were drawn in Shu-iro (Empire red) from right to left lining up sideways.
石室の奥壁には、右から順に2頭の動物像、矢を射る騎馬人像、大の字形に手足を広げて手を繋いでいる4人の人物像、器物を持った3人の人物像が横一列に朱色で描かれている。