Also known as: Tomb of Prince Motoi (Hayato Stones)
Location
Nara Pref.
Shape
墳形不明
Designation
Imperial Mausoleum (IHA)
IHA designation
IHA-managed (no public entry)
Overview
The designated tomb of Prince Motoi at Horencho, Nara, known from the Shoku Nihongi burial notice and its Hayato Stones, while the mound itself remains archaeologically unresolved.
Finds & research
The tomb's burial facility and finds are unknown; the Hayato Stones are monuments within the precinct.
Two views on the occupant
Archaeological view
The IHA designates this as the tomb of Emperor Shomu's crown prince; a government response identifies the archaeological site as Daikokugashiba Kofun. The Hayato Stones are famous, but the public evidence checked does not establish the mound's form, size, or burial facility, and the figures are not treated as excavated grave goods.
Imperial Household Agency view
Managed by the IHA as the Nahoyama Tomb of Prince Motoi, Emperor Shomu's crown prince (d. 728), matching the Shoku Nihongi record. At the enclosure's corners stand the Hayato Stones — rare animal-headed figures, perhaps zodiac guardians, of the Nara period.