98m keyhole mound in Muko City — a National Historic Site within the Otokuni Kofun Group. Regarded as the most powerful 4th-century chieftain tomb in the Otokuni region. Academically important for its bronze mirrors linked to Tsubai Otsukayama Kofun (id:285). A flagship ancient site of Muko City alongside Itsukahara (id:287) and Moto-Inari (id:289).
Finds & research
Multiple bronze mirrors incl. triangular-rimmed types (Chinese and Japanese), pit-style stone chambers in both front and rear sections. Some details unpublished.
Two views on the occupant
Archaeological view
98m keyhole mound (rear circle 57m, 18m high). Early 4th century. Stone-lined pit chambers in both front and rear sections; rear chamber 6.45m × 1.6m. Multiple bronze mirrors including Chinese and Japanese-made triangular-rimmed types recovered; a production relationship with Tsubai Otsukayama Kofun (id:285) has been noted. Regarded as the most powerful chieftain tomb in the Otokuni region during the 4th century.
Imperial Household Agency view
Not designated by the IHA. Designated as a National Historic Site (standalone) in 2015; incorporated into the "Otokuni Kofun Group" in 2016. Managed by Muko City.
Field notes
Located on Mukou plateau; combined visit routes with Mukou Shrine and Itsukahara Kofun are available. About 20 min walk from Hankyu Higashi-Mukou Station.