An early-period chieftain's tomb in Hiokayama Park, Kakogawa. Long protected as the designated tomb of Yamato Takeru's mother, it anchors the Hiokayama group, walkable together with Minami-Otsuka Kofun (id:604).
Finds & research
Stone paving and haniwa/pottery fragments from the surface; interior uninvestigated.
Two views on the occupant
Archaeological view
A keyhole mound ~80m long (rear circle ~45m, front ~33m), the oldest of the Hiokayama group, built in the 4th century. The burial is unknown; stone paving and haniwa/pottery fragments have been collected from the surface.
Imperial Household Agency view
Managed by the IHA as the Hioka Mausoleum, designated (1883) as the tomb of Harima-no-Inabi-no-Oiratsume — consort of Emperor Keiko and mother of Yamato Takeru. Worship is from the oratory; the mound is closed.
Field notes
About 5 min on foot from JR Hioka Station. A path leads to the worship area.