A terminal-period square mound on the Obitoke hills, Nara. Its brick-style chamber, like Hanayama-Nishizuka's (id:663), marks the arrival of continental masonry. Viewable from the oratory.
Finds & research
Brick-laid plastered chamber (12.47m surviving); Sue and Haji ware.
Two views on the occupant
Archaeological view
A two-tiered square mound ~30m per side (with outer banks spanning ~120m), built in the mid-7th century. Its brick-laid (sen-zumi) plastered chamber of Haibara stone — 12.47m surviving, two-roomed — is a rare chamber type of the terminal period. Sue and Haji ware recovered.
Imperial Household Agency view
Managed by the IHA as the Koganezuka reference site; the candidate is Prince Toneri, compiler of the Nihon Shoki, though his 735 death postdates the mid-7th-century mound.
Field notes
Walkable from JR Obitoke Station; the chamber is closed.