A large chiefly tomb in the Iwase-Senzuka group, known for its 88m mound, 5.9m-high chamber, and distinctive stone shelves and beams.
Finds & research
The rear chamber is of Iwase type with eight stone beams and two stone shelves. Finds include Sue ware.
Two views on the occupant
Archaeological view
A two-tiered keyhole mound 88m long on the summit of Tennozukayama at about 155m elevation, the largest in Wakayama Prefecture. It is dated to the mid-6th century. Its corridor chamber has a main room 5.9m high, regarded as Japan’s second tallest, with eight stone beams and two stone shelves characteristic of the Iwase type.
Imperial Household Agency view
Not an Imperial Household Agency mausoleum. Added in 2016 to the Special Historic Site Iwase-Senzuka Kofun Group.
Field notes
As of 2026, the tomb cannot be visited because of conservation work and a blocked access road after a slope collapse; the Kii-Fudoki-no-Oka notice tentatively extends through the end of fiscal 2026. Its museum is also temporarily closed for rebuilding. Check the official site before visiting.