Actually, in reference to # 5 they [url=http://www.physorg.com/news66655425.html][u]found one older much recently[/url][/u].

In one of the most significant archaeological and anthropological finds in recent history, Robert Benfer, professor emeritus of anthropology at the University of Missouri-Columbia, has discovered the earliest astronomical alignments and sculptures in the round, which is a sculpture designed to be viewed from many directions and angles, in the New World in Buena Vista, Peru. The Temple of the Fox, an ancient structure in the Chillon Valley that dates back to 2200 B.C., contains sculptures of unprecedented artistic style that can be associated with the agricultural calendar and Andean myth.