A large mound built almost parallel to Isonokami Otsuka Kofun.
Finds & research
A huge granite horizontal stone chamber survives. Details of the grave goods and occupant are unknown.
Archaeological view
An approximately 128m keyhole mound at Isonokami, Tenri. It has a huge 10.4m-long granite horizontal stone chamber opening south and is assigned to the latter half of the Late Kofun period in the errata for a Tenri City publication and to the mid to late 6th century by Kazuo Migishima (2023).
Field notes
Check current Tenri City guidance and on-site signs before entering the mound or chamber.