Hanzei-tenno-ryo Kofun is a keyhole-shaped mounded tomb located in the northernmost part of the Mozu area.
The mound length is 148 m, and the height of the square front part is 14.8 m. It had a double moat at the time of its construction.
Artifacts including cylindrical haniwa (earthenware funerary sculptures), representational haniwa, and Sue ware (stoneware) have been excavated from the outer moat.
The period of construction dates to the first half of the 5th century.