Not sure if this is the same

But are Nazca lines similar to a mandala or do they have to be circles

Probably a dumb question, but if the earth is the circle/sphere then these maybe could be the images for it
as well as pyramids and other large spiritual structures

also I saw something about a island with similar images
but they where human built very very high mounds I think almost miles large..of fish,turtles and other stuff all only visible from the sky...wish I could find that info on them again