Daigigakoi Shell Mound, Archaeological midden in Shichigahama, Japan
Located on the south shore of Matsushima Bay, this shell mound extends 270 meters east-west and 280 meters north-south in a horseshoe shape.
The archaeological site contains remains from the early to middle Jōmon period, between 4000 to 2500 BC, when sea levels were five meters higher than today.
Excavations revealed eight pit dwellings and numerous artifacts including bone materials, shells, pottery fragments, and stone tools that document ancient Japanese coastal life.
The site lies 35 meters above the current coastline and can be reached within 10 minutes by car from Geba Station on the JR East Senseki Line.
The mound reaches over two meters in thickness and serves as a reference point for dating other Jōmon period remains in the southern Tōhoku region.
Location: Shichigahama
GPS coordinates: 38.30303,141.04386
Latest update: March 10, 2025 12:29
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