I didn't believe this book, but I had to admit that some of the lines looked like landing strips. Recently I saw a video on the Nazca Lines and they showed the "landing stip" pictured in Von Danikens' book-- it was only about five feet long! Trick photography! Von Daniken was also in the video, giving his appologies. The video also shows an experiment where humans easily replicated a Nazca-like design in the same area without any tools. I wouldn't trust what he writes, but at least he is willing to admit his wrongs. God forbid we should give the natives credit......