🇯🇵 Japan · Submerged site
Old Yonaguni Reservoir B — Yonaguni (58-29)
Chalcolithic (regional) · Chalcolithic
Old Yonaguni Reservoir B — Yonaguni (58-29) at Yonaguni, Japan is a Chalcolithic (regional) submerged city of the Chalcolithic tradition, built c. 200 CE for reservoir and associated settlement.