A keyhole mound on a low terrace overlooking the Amanogawa River in Miyanosaka, Hirakata. Its two-tiered mound is aligned roughly east-west and measures 120m long, with a 63m rear circle and a 55m-wide front section. The rear portion is slightly elongated and oval. It is thought to have been built about 1,700 years ago in the Early Kofun period and became a National Historic Site in 1972.
Finds & research
Stone facing and fragments of cylindrical and figurative haniwa have been found on the mound. The burial facility is unknown, although the Agency for Cultural Affairs notes slab fragments on the rear-circle summit that may indicate a pit-style stone chamber. Grave goods are unknown.
Official status & archaeological view
Official status
It was designated a National Historic Site in 1972.
Archaeological view
The occupant is unknown. Recent survey work found that its plan shares characteristics with Hashihaka Kofun in Nara Prefecture.
Field notes
Hirakata City states that entry to the summit of the rear circle is prohibited. Follow on-site guidance when visiting.