Hachizuka Kofun is a keyhole-shaped mounded tomb constructed on the north side of Chuai-tenno-ryo Kofun . There is a theory that this tomb is related to Chuai-tenno-ryo Kofun as a satellite tomb.
The mound length is 60 m, and the height of its round rear part is 6.5 m. It is unique in terms of the relationship between its height and mound length.
Cylindrical haniwa have been found on the mound.
The construction period dates to the second half of the 5th century.