A large mound built almost parallel to Isonokami Otsuka Kofun.
Finds & research
A huge granite horizontal chamber survives. Details of the grave goods and occupant are unknown.
Two views on the occupant
Archaeological view
An approximately 128m keyhole mound at Isonokami, Tenri. It has a huge 10.4m-long granite horizontal chamber opening south and is dated to the late 6th century in Tenri City’s correction sheet.
Imperial Household Agency view
This is not an IHA mausoleum; National Historic Site designation is not confirmed.
Field notes
Check current Tenri City guidance and on-site signs before entering the mound or chamber.