Reader dc writes:
FYI, an interesting article on effigy mounds visible in Google Earth in South America. dc.
http://www.antiquity.ac.uk/ projgall/benfer329/
http://www.antiquity.ac.uk/
This is about rock piles and stone mound sites in New England. A balance is needed between keeping them secret and making them public. Also arrowheads, stone tools and other surface archaeology.
I don't see it.
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