Mizuki, Ancient fortress in Dazaifu, Japan
Mizuki is an ancient fortification in Fukuoka Prefecture, Japan. The earthwork structure extends for about 1.2 kilometers and reaches a height of roughly nine meters in some sections.
The site was built in 664 on the order of Emperor Tenchi as a defensive line following conflicts with the Korean kingdom of Baekje. Construction came soon after the Battle of Baekgang River and was meant to protect the capital from possible attacks.
The name comes from an old Japanese term referring to a water-related fortification. The visible earthen walls still show the layered construction method where plants were used to stabilize the soil.
The ruins are about 25 minutes on foot from Tofuromae Station on the Nishitetsu Tenjin Omuta Line. The walk passes through quiet residential neighborhoods and slopes upward gradually, so sturdy shoes help.
Archaeological digs brought to light pottery fragments from the 8th century bearing the site's name in old Japanese script. These finds provided proof of the place's historical identity and helped clear up centuries of uncertainty.
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