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Nazca Hummingbird. © Bjarte Sorensen The Nazca lines in Peru were made many centuries before the rise of the Inca empire and they are one of the most important legacies of ancient pre-Inca Peruvian culture. Basically they are are geoglyphs and geometric line clearings in the Peruvian desert. The German scientist Von Däniken, in his book "The Response of the Gods", claims the lines were treated as signals and landing strips for alien spacecraft.