A large emergent mound within the Makimuku site. Its form and scale, along with its dating, remain subjects of study. It is part of the Makimuku Kofun Group.
Finds & research
The structure of the burial facility is unknown. Wooden objects and other material have been recovered from the moat.
Official status & archaeological view
Official status
It was added to the National Historic Site Makimuku Kofun Group (Makimuku Ishizuka and Hokenoyama, designated 2006) together with Makimuku Yazuka on 17 February 2026, following the Council for Cultural Affairs’ recommendation of December 2025.
Archaeological view
An approximately 115m keyhole-shaped mound at Higaida, Sakurai. Investigated material includes groups indicating both the early and late 3rd century, so its construction date remains unsettled.
Field notes
Do not enter farmland or private property; observe only from public roads and authorized areas.