HIRAIZUKA TUMULUS
Location
Mozuryounan-cho 3, Sakai City
This keyhole-shaped burial mound lies with its front square portion facing west and is located approximately 300 meters southwest of the front square portion of the Nisanzai Tumulus.
The mound's overall length is 58 meters and the mound is completely surrounded by a 7.5 meter wide moat. The rear circular portion has a diameter of 30.5 meters and the width of the front square portion is 45.5 meters.
In 1971, as part of the Land Division Reorganization Project, an excavation dig revealed the existence of a row of clay figures extending from the constricted center and continuing to the front square portion of the mound. Items found during the excavation include clay cylinders, clay figures, earthenware jars, platters, and other items. However, the existence of stone buttresses has not been confirmed.