There is a celestial solution to the Nazca Lines
The folks who made them were mirroring their constellations in the sky,
which they considered to be gods and figured if they made them big
enough, their gods would see them even from way up there and shower
their faithful with goodies and such - or at least not kill them right away.
Pre-Columbia cultural beliefs were pretty nasty and bloody overall.
Of course in the 1970s we were told by von Daniken that they were
landing strips for visiting alien spacecraft.