🇯🇵 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…