Oka Misanzai Kofun, Ancient keyhole-shaped burial mound in Fujiidera, Japan.
Oka Misanzai Kofun is a keyhole-shaped burial mound built during the fifth period in Fujiidera, extending approximately 230 meters and surrounded by wide protective moats. The distinctive two-part form, composed of a circular rear section and a rectangular front section, exemplifies early Japanese burial architecture.
The mound was constructed in the fifth century and forms part of the Furuichi Kofun Cluster, a group of major imperial graves from that era. During the Muromachi period, the site was repurposed as a castle before returning to its role as a protected historical monument.
The name Oka Misanzai signals its imperial significance to visitors, and the site displays the monumental building style that demonstrated the power of early Japanese elites. The shape and scale of the mound communicated high social status in its time and continues to do so today.
The site is accessible on foot, with the nearest train station approximately 30 minutes away, and maps are available at local tourist offices. The best view of the entire form comes from walking around the perimeter of the mound, which takes one to two hours.
Archaeological finds from the site reveal detailed insights into burial practices and material traditions of fifth-century Japan. These artifacts expose information about grave goods, tools, and objects buried alongside the deceased.
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