A keyhole mound 150m long with a rear circle 15.3m high. It was built on the western edge of a north-south plateau, with its front section facing north-east. The mound has three tiers and a projection on the east side of the waist. Its moat is preserved underground; on the west side there is no evidence that it held water. It is assigned to the early Middle Kofun period. Part of the National Historic Site Furuichi Kofun Group, it is a constituent monument of the Mozu-Furuichi Kofun Group World Heritage Site, inscribed in 2019.
Finds & research
Rows of cylindrical haniwa survive on the terraces of the mound, and figural haniwa have also been recovered. Stone scattered on the summit points to a possible pit-style stone chamber, though this has not been confirmed. The moat around the mound is preserved underground, and on the west side there is no sign it ever held water.
Official status & archaeological view
Official status
Part of the National Historic Site "Furuichi Kofun Group". The designated area is owned by Fujiidera City and private owners; the publicly owned parts are looked after by the Fujiidera City Board of Education and are freely open to visitors, although no site development has yet been carried out there (preservation and utilization plan, 2023). A confirmation survey was conducted within the designated area in 1984.
Archaeological view
Occupant unknown. Dated to the second half of the 4th century by the World Heritage site and to the early Middle Kofun period by the Agency for Cultural Affairs, making it one of the earliest mounds in the Furuichi area. The moat's outline has been found to narrow in step with the mound. Fujiidera City reports stone facing on the mound and a confirmed row of cylindrical haniwa. It stands beside Otorizuka Kofun (110m), the two forming the early burial ground of the northern Furuichi area.
Field notes
One of the few mounds in the Furuichi group where the public may walk onto the mound itself, within the publicly owned area.