In addition, Odan burial tumuli and Akudo tumuli are located in the Ishikawa-cho Town on the other (eastern) side of the river, and Miyamae tumuli in the Tamagawa-mura Village.
その東側対岸の石川町には大壇古墳群・悪戸古墳群そして玉川村の宮前古墳群と拡がっている。