The Makino Kurumazuka Kofun is a , which is shaped like a keyhole, having one square end and one circular end, when viewed from above. It is located an elevation of 22 meters, on the northern edge of the Hirakata Plateau formed on the left bank of the Yodo River. The main axis is in the east-west direction parallel to the terrain with the front orientated to the east. It has a total length of 107.5 meters with a posterior circular portion diameter of 54.5 meters. It is surrounded by an empty moat with a width of ten meters, of which there are remnants of the outer embankment on the west and south sides the tumulus. The interior of the tumulus has never been excavated, so the details of its internal structure, and the presence of any grave goods is unknown. Fukiishi and haniwa have been found on the surface of the tumulus. The fukiishi are unique in that stone slabs made from stone from Tokushima and Hyogo Prefectures are used, rather than local river rocks as is common at most other sites.
