Atsukashiyama Barrier, Medieval fortification in Fukushima Prefecture, Japan
The Atsukashiyama Barrier spans 4 kilometers from Atsukashiyama hill to the Abukuma River region, featuring earthen ramparts and defensive trenches.
Constructed in 1189 during the Oshu War, the barrier served as a strategic defensive position for Fujiwara no Yasuhira against the advancing forces of Minamoto no Yoritomo.
The site contains double moats and triple earthen fortifications that demonstrate the advanced military engineering techniques of medieval Japanese defensive architecture.
The barrier remains can be accessed through a forest road leading to Atsukashiyama summit, with informative signposts located along National Route 4.
Archaeological excavations in 1971 revealed deep V-shaped trenches measuring between 1.5 to 2.8 meters, cut directly into the bedrock for enhanced fortification.
GPS coordinates: 37.88806,140.56583
Latest update: March 8, 2025 11:06
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