[Not rock pile related, this is about an artifact found in a context dated to more than 19,000 years ago.]
"What’s more, chemical analysis carried out last year on a European-style stone knife found in Virginia back in 1971 revealed that it was made of French-originating flint. "
[Click here for the article from the Independent newspaper in the UK]
[Click here for the a Washington Post update]
More articles here.