A keyhole mound on Mt. Yukino at the border of Omihachiman, Higashiomi, and Ryuo. Mirrors, weapons, lacquer objects and other goods from its unlooted pit-style chamber provide important evidence of early Kofun-period burial practice.
Finds & research
Unlooted pit-style chamber (6.1m interior length); five bronze mirrors including three triangular-rimmed deity-and-beast mirrors, 96 bronze arrowheads, iron arrowheads, a hoe-shaped stone, lacquer objects and other items. The finds are nationally designated Important Cultural Properties.
Official status & archaeological view
Official status
National Historic Site (2014); the finds were designated Important Cultural Properties in 2001.
Archaeological view
An estimated 70m, two-tiered keyhole mound on the summit of Mt. Yukino. Two burial facilities lie side by side in the rear; the eastern, unlooted pit-style chamber, 6.1m long inside, was excavated. Investigations followed the 1989 discovery. The Agency for Cultural Affairs dates construction broadly to the beginning of the 4th century from the grave goods; the Higashiomi archaeological center says the first half of that century, while the city park guide says the middle of the century.
Field notes
A hiking trail leads to the summit mound. Yukinoyama Historical Park and the Hachimansha Kofun Cluster lie at the foot. According to Higashiomi City, the mound has been reburied.