A National Historic Site regarded as a large tomb of the early Yamato polity. Numerous mirror fragments and other items came from the looted chamber, and recent research reconstructs more than 103 mirrors.
Finds & research
The looted pit chamber yielded mirror fragments, beads, stone arm ornaments, and a ceremonial staff, among other items. Recent reassessment places the mirror total above 103.
Official status & archaeological view
Official status
It was designated a National Historic Site on 27 March 1973.
Archaeological view
An approximately 207m keyhole mound at Tobi, Sakurai (Agency for Cultural Affairs designation text; the Museum of the Archaeological Institute of Kashihara gives about 200m). Its rear section has three tiers and front two, with stone facing; a log fence surrounded the summit pit chamber and double-rimmed jars were arranged there. It is thought to have been built in the late 3rd century, in the generation after Hashihaka. The occupant is unknown.
Field notes
Follow on-site guidance when viewing the mound and its surroundings. For displays of the finds, check the latest information from the Museum of the Archaeological Institute of Kashihara and other museums.