🇯🇵 Japan · Megalith
Komakino Stone Circle
Late to Final Jomon (2300–400 BCE) · Late Jomon (Tsugaru region)
Late Jomon megalithic cemetery (c.2300–1700 BCE) on Hakkoda foothills in Aomori City — massive ring-ditch stone circle 35 m dia.
🇯🇵 Japan · Megalith
Isedotai Stone Circles
Late Jomon (2000–1000 BCE) · Late Jomon (northern Tōhoku)
Late Jomon ritual stone complex (c.2000–1700 BCE) at Kitaakita, Akita — four large stone circles (largest 45 m dia.) with 200+ river cobble andesite arrangements, sunken pit structures, and adjacent…