Non-invasive historical “digging” – Very cool!

OH MAN!! I love me some historical stuff. The older the better. This article is really cool!!

http://news.nationalgeographic.com/2015/04/150403-noninvasive-archaeology-ammaia-roman-lusitania-portugal-video/?utm_source=Facebook&utm_medium=Social&utm_content=link_fb20150403news-noninvasive&utm_campaign=Content&sf8381763=1

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