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Evidence of modern man's migration out of the African continent has been documented in Australia and Central Asia at 50,000 years and in Europe at 40,000 years.
The fact that humans could have been in North America at or near the same time is expected to spark debate among archaeologists worldwide, raising new questions on the origin and migration of the human species.
This changed when researcher and author, Michael Tellinger, teamed up with Johan Heine, a local fireman and pilot who had been looking at these ruins from his years flying over the region.
Goodyear, who has garnered international attention for his discoveries of tools that pre-date what is believed to be humans' arrival in North America, announced the test results, which were done by the University of California at Irvine Laboratory, Wednesday (Nov .17).The region is somewhat remote and the "circles" have often been encountered by local farmers who assumed they were made by some indigenous people in the past.