Ōmuro Kofun group, Ancient burial mounds in Matsushiro, Japan.
The Ōmuro Kofun group contains over 500 burial mounds spread across two valleys on the south side of the Chikuma River at elevations between 350 and 500 meters.
Built from the 5th to 8th centuries, these tombs include 330 circular-shaped kofun constructed with stacked river stones and one keyhole-shaped burial mound.
Archaeological excavations at the site revealed numerous Sue ware pottery, bronze mirrors, armor, swords, horse fittings, and jewelry from the Kofun period.
The archaeological park features the Ōmuro Kofun Museum displaying artifacts and stands 15 minutes by car from Nagano IC on the Jōshin-etsu Expressway.
The necropolis holds Japan's largest concentration of circular-shaped kofun, with most structures measuring approximately ten meters in diameter.
Location: Nagano
GPS coordinates: 36.58972,138.23083
Latest update: March 4, 2025 14:08
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