Okinohara Site, Archaeological settlement in Akazawa, Tsunan, Japan
The Okinohara Site stands on a river terrace of the Shinano River, containing foundations of 49 circular pit dwellings arranged around a 120-meter diameter plaza.
Excavations between 1970 and 1973 revealed a middle Jomon period settlement dating back 5300 to 4000 years, leading to its designation as National Historic Site in 1978.
The site contained 1686 examples of flame style Jomon pottery, along with stone tools and preserved organic materials including chestnuts, walnuts, and ancient food remnants.
Located 15 minutes by car from Tsunan Station on the JR East Iiyama Line, the excavated artifacts are now stored at the Tsunan Town History and Folklore Museum.
The settlement features three large rectangular structures built with chestnut wood, suggesting a population that potentially cultivated nut trees alongside their hunting activities.
Location: Tsunan
GPS coordinates: 36.99150,138.65331
Latest update: March 7, 2025 23:06
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