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Inariyama Kofun

Keyhole-shaped mound at Gyoda, Saitama, Japan, 120 m long and the first in the Sakitama kofun cluster, later 5th century. It stands in two steps inside a double rectangular dry moat about 1.8 m deep; the square end was quarried away as landfill. The burial held a wooden coffin packed in clay on gravel, with iron swords, a bronze mirror, magatama, two silver rings and horse harness. The finds became an Important Cultural Property in 1981 and a National Treasure in 1983. National Historic Site 1938, Special Historic Site 2020. Coordinates: Wikipedia = Wikidata 36.1294/139.481; no OSM node.

Dated events and their evidence

• 450 CE mainstream
  keyhole mound raised, later 5th century source
• 1938 CE mainstream
  designated a National Historic Site source
• 1983 CE mainstream
  the excavated grave goods designated a National Treasure source

Where

36.1294° N, 139.4810° E

Sources

• https://en.wikipedia.org/wiki/Inariyama_Kofun

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