Well I am very confident that my total solar eclipse theory presents the most probable explanation as to why the Nazca culture created gigantic geoglyphs that are best viewed by an "Eye in the Sky". There is plenty of circumstantial evidence that the Nazca culture was significantly influenced by an unusual series of solar eclipses that took place over Peru during the time that the Nazca Lines and geoglyphs were created. i.e. from about 200 B.C. to around 600 A.D.

See - [nazcalines.homestead.com]