After years of research, Dr. Maria Reiche formed one mainstream idea about how and why the Nazca Lines were made. But who were they made for? In the 1960s, Swiss author Erich Von Daniken proposed a theory: that aliens visited our ancestors and imparted onto them the knowledge needed to create our greatest earthly treasures. Most experts ignored these claims. Others believed he was on to something...

Learn more about your ad choices. Visit podcastchoices.com/adchoices