Message #30794

[Bianca]

Even more ancient, and more controversial, is the Calico Hills site in California, excavated by Louis Leakey (SCIENCE, 1970).  Leaky's estimate for the age of the stone tools from the Calico Hills site is as much as 500,000 years!  Such a concept was unthinkable to other archaeologists, who quickly came up with the alternative explanation that the stone tools were simply naturally weathered rocks.  Vance Haynes of the University of Arizona has been amajor proponent of the natural geological artifact theory, and this is now the most commonly held belief (SCIENCE
1973).  Leaky died soon after excavating the site and was unable to carry on the debate.  The site remains controversial; but, as with the Hueyatlaco site, the controversy is between mainstream archaeologists, not between science and the occult.


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