Katsuragaoka chashi-ato, Ainu fortification ruins in Abashiri, Japan
The remains of Katsuragaoka chashi stand on an elevated plateau with two mounds, overlooking the Sea of Okhotsk in northern Hokkaido.
The fortified settlement dates back to the Muromachi period and received official designation as a Historic Site of Japan in 1935.
The archaeological site contains structural elements that demonstrate how Ainu communities designed defensive positions while maintaining spaces for social gatherings.
Located within Katsuragaoka Park, the historical site presents visible fortification foundations and provides information panels about Ainu construction techniques.
The position of this fortification allowed inhabitants to monitor both land and sea approaches, making it an effective center for trade control.
Location: Abashiri
GPS coordinates: 44.01792,144.26972
Latest update: March 4, 2025 07:08
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