8 nov 1070 anni - 156 Great Serpent Mound
Descrizione:
1070 CE
Earthwork/effigy mound
Adams County, Southern Ohio
Largest serpent effigy in the world
1300 Feet ranging from 1-3 feet in height
Head points east and tail points west
Head aligns with summer solstice sunset
Tail points to winter solstice sunrise; curves parallel with lunar phases
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