Neolithic engineers used scientific knowledge to build huge megalith

A monument in southern Spain that dates to between 3600 and 3800 BC appears to have been built with an understanding of geology and physics

​A monument in southern Spain that dates to between 3600 and 3800 BC appears to have been built with an understanding of geology and physics A monument in southern Spain that dates to between 3600 and 3800 BC appears to have been built with an understanding of geology and physics