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Oldest Petroglyphs in N. America Found

Date back at least 10,000 years.

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Larry Benson/USGS, via AP

Ancient rock etchings discovered at a dry lake bed in Nevada are the oldest ever found in North America, dating back at least 10,000 years and maybe as much as 14,800. They resemble 7,600-year-old petroglyphs found previously in Oregon. While many later etchings show spears and antelope, the Nevada glyphs feature abstract geometrical designs. "We initially thought people 12,000 or 10,000 years ago were primitive, but their artistic expressions and technological expertise associated with these paints a much different picture," said a Nevada museum curator who co-wrote a paper on the findings.

Read it at Associated Press

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