🇯🇵 Japan · Megalith
Oyu Stone Circles — Late Jomon Solar Alignment
Late Jomon (2000–1500 BCE) · Late Jomon Oyu
Kazuno circles excavated 1931 and 1946, Late Jomon double circles aligned to summer solstice sunset.
🇯🇵 Japan · Megalith
Isedotai Stone Circles — Akita Northern Jomon
Late Jomon (2200–1500 BCE) · Late Jomon
Kita-Akita Isedotai excavated 1992–, 4 circles with 200+ stones aligned to Mount Moriyoshi.