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Beam of Sunglight Leads Tourists to Ancient Petroglyphs Hidden on a Hawaiian Beach (Video) -
Expert in Chinese Petroglyphs Supports Theory Ancient Chinese Made It to America
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Tucson Artifacts Suggest Romans Made It to New World in 8th Century: Expert
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Petroglyphs Left in Canada by Scandinavians 3,000 Years Ago?
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Experts Divided on Native American Origins
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Scholars Analyze Evidence Ancient Chinese Explored America
