Hazamiyama Kofun is a keyhole-shaped mounded tomb constructed in the center of the Furuichi area.
The mound length is 103 m, and the height of the round rear part is 9.5 m. There is a looter’s pit at the top of the round rear part, from which a stone coffin was reportedly discovered.
The excavated cylindrical haniwa (earthenware funerary sculptures) included large examples, while representational haniwa have also been unearthed.
The construction period dates to the first half of the 5th century.