🇯🇵 Japan · Megalith
Oshoro
Jomon Mid–Late 2500–1800 BCE (Hokkaido) · Jomon Hokkaido (Oshima–Shakotan)
Hokkaido Jomon stone circle (2500–1800 BCE) at Oshoro Otaru — 30 m with 47 boulders and Fusen rock art above Oshoro Bay.
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🇯🇵 Japan · Megalith
Jomon Mid–Late 2500–1800 BCE (Hokkaido) · Jomon Hokkaido (Oshima–Shakotan)
Hokkaido Jomon stone circle (2500–1800 BCE) at Oshoro Otaru — 30 m with 47 boulders and Fusen rock art above Oshoro Bay.
🇯🇵 Japan · Megalith
Late Jomon (c.1500 BCE) · Late Jomon
Sea-bluff Jomon stone circle (1500 BCE, 33×22 m oval, 440 stones) — burial and market above Sea of Japan.