[1] The site is located on the east side of the Abukuma River, which flows through from the south to the north, at an altitude of about 250 meters.

Discovered in 1991, the Koriyama City Board of Education conducted an excavation study from 1996 to 1998.

The largest tumulus is a zenpō-kōhō-fun [ja] (前方後方墳) with the form of "two conjoined rectangles".

It was constructed by partly cutting out the natural hill next to the tumulus, with three tiers in the rear and two in the front.

The tomb had a large quantity of grave goods, including swords, spears, sickles, fragments of armor as well as jewelry, which date the construction to around the second half of the 4th century The remaining four empun [ja] (円墳)-style circular domed kofun have a diameter of approximately 15 meters each but were not well preserved.