Preserved on the grounds of the Doutaku Museum in Yasu — a rare chamber you can enter to view the coffin up close. The final chapter of the Oiwayama chieftains' three-century story.
Finds & research
Corridor chamber (3.3m) with Shiga's oldest composite granite coffin in place.
Two views on the occupant
Archaeological view
A round mound ~15m across, closing the Oiwayama chieftain line around 600. Its corridor chamber (3.3m main room) holds a composite granite coffin — the oldest of its type in Shiga.
Imperial Household Agency view
Not designated by the IHA. Part of the National Historic Site "Oiwayama Kofun Group" (added 1985).
Field notes
On the Doutaku Museum grounds; the chamber is enterable. The pin follows the museum's location.