Nuraghe Losa
http://slicer93.mbsrv.net/20130125220202.jpg
Though I can't tell the size of it by the above photo, you can find the size when you see the whole figure of it.
It seems Big Stone humans were made in the big stone masonry and small Stone humans were made in the small stone masonry.
I have been told Nuraghe multiplied and grew like mushrooms.
I know it in theory, but it is difficult to imagine the power of energy at the time.