Sosyal medya paylaşımları

15 Nisan 2008

Magnetic gradiometer map of a prehistoric hearths


Magnetic gradiometer map of a prehistoric Native American campsite in Wyoming, USA. Five fire hearths (later excavated) appear as circular magnetic highs.

Image taken from Wikipedia where it is sait that the image is under public domain (http://en.wikipedia.org/wiki/Image:3030-mag.jpg)

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