Oniana tumuli, Koboyama tumuli, and Yanaka tumuli are located in a wide area in the Yabuki-machi Town on the west side of the Miyamae tumuli across the Abukuma-gawa River.
宮前古墳群から阿武隈川を挟んで西側に拡がるのが矢吹町の鬼穴古墳群・弘法山古墳群と、谷中古墳群などである。