In addition, there are the zenpo-koen (keyhole-shaped tomb) mound, zenpo-koho (square front, square back) mound, soen (double round) shape mound and soho (double square) shape mound, which all have two tumuli.
また、前方後円墳・前方後方墳・双円墳・双方墳などの山が二つある古墳もある。