Erich von Daeniken on the Nazca Lines and Crop Circles

Erich von Daeniken talks about the Nazca lines of South America and crop circles. Whether you can understand the dialogue or not (Swiss German), the film and photos are worth a view. I remember reading Erich's first book back in the 1970s, I believe called "The Gold of the Gods" , a very interesting reading in its own right.