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  • Japanese: 神篭石 or 神籠石 (kougoishi)

Kôgoishi are earthenwork structures, on a stone foundation, constructed in Japan during the Asuka period, particularly in areas around Fukuoka, on the island of Kyushu. The name "kôgoishi" means "stones of divine protection", a name given them by the Meiji period archaeologist Tsuboi Shôgorô, who conjectured that they served as spiritual or practical protection for sacred sites.

Kôgoishi date to the 6th or 7th century CE, and are found predominantly in northern Kyushu and on the shores of the Inland Sea. The longest one to be found, at 2.3 km in length, lies near the summit of Mt. Kôra, near Fukuoka. The stones there are roughly one meter long, 50 cm high and 70 cm thick.

Scholars after Tsuboi determined that the structures are most likely the remains of practical, military fortifications, and were unlikely to have significant spiritual connections. The style and form of the ruins matches many in Korea; the period when these were built was one of flourishing contact with Korea, and it is theorized that Korean stoneworkers, artisans, and architects may have played a role in the construction of these fortresses. Some scholars believe that some kôgoishi were built in anticipation of an attack from Korea, but little evidence has been found to confirm this.


  • This article was written by User:LordAmeth and contributed to both the Samurai-Archives Wiki and Wikipedia; the author gives permission for his work to be used in this way.
  • Frederic, Louis (2002). "Kōgoishi." Japan Encyclopedia. Cambridge, Massachusetts: Harvard University Press.
  • Kougo-ishi at JAANUS. Japanese Architecture and Art Net Users System. Accessed 17 July 2007.