Designated a National Historic Site in 1992, it opened after restoration in 2010.
Finds & research
Cylindrical, house-, cuirass-, and shield-shaped haniwa indicate ritual activity at the projection-like feature. The central burial facility remains unexcavated.
Two views on the occupant
Archaeological view
A 106.5m keyhole mound at Ichinomoto, Tenri, dated to the late 4th century. A projection-like feature at the rear yielded a cylindrical haniwa row and house-, cuirass-, and shield-shaped haniwa.
Imperial Household Agency view
This is not an IHA mausoleum. It was designated a National Historic Site on 15 December 1992.
Field notes
It can be visited as a developed historic park; check Tenri City for current conditions.