Hopewell Ceremonial Earthworks are a World Heritage Site in the United States preserving eight monumental earthworks constructed by the Hopewell tradition. The sites consist of large geometric shapes covering several acres in area. Constructed between approximately 1 and 400 CE, the earthworks lie along tributaries of the Ohio River in the present-day state of Ohio. They depict the richness and depth of precontact culture, science, astronomy, and sacred monumental architecture. Many sites were plowed and reduced in size during almost 200 years of agricultural use.
摘自英文维基百科「Hopewell Ceremonial Earthworks」,按 CC BY-SA 4.0 使用
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