22 Mar 2001 --- Nazca lines. Aerial photograph of geoglyphs, or landscape drawings, in the coastal desert of southern Peru. One represents a condor (lower right). The rectangular strip extending to upper centre is the Great Plaza of the Pleiades, so- called from astronomical theories that the builders orientated it with the Pleiades star cluster. Many of the geoglyphs depict stylised animals and other objects. They cover huge areas and can only be properly seen from the air. They were made by removing the dark surface stone to reveal a lighter stone layer underneath. It is thought they were made by the Nazca, a native South American people, around 2000 years ago. --- Image by © David Nunuk/Science Photo Library/Corbis
ca. 200 B.C.-600 A.D., Nazca, Ica Region, Peru --- One of the Nazca lines depicting a spider stands in Nazca, Peru. There is debate about exactly when and why the lines were formed. Some believe they served as an astronomical calendar for the Paracas and Nazca cultures, others that they served as ritual walkways from important ceremonial sites, and some even think they were created by alien spacecraft. | Located in: Nazca. --- Image by © Charles & Josette Lenars/CORBIS
ca. 200 B.C.-600 A.D. --- One of the Nazca lines depicting a hummingbird in Nazca, Peru. There is debate about exactly when and why the lines were formed. Some believe they served as an astronomical calendar for the Paracas and Nazca cultures, others that they served as ritual walkways from important ceremonial sites, and some even think they were created by alien spacecraft. | Located in: Nazca. --- Image by © Charles & Josette Lenars/CORBIS
ca. 200 B.C.-600 A.D. --- One of the Nazca lines depicting a figure named the "Cosmonaut" stands in Nazca, Peru. There is debate about exactly when and why the lines were formed. Some believe they served as an astronomical calendar for the Paracas and Nazca cultures, others that they served as ritual walkways from important ceremonial sites, and some even think they were created by alien spacecraft. | Located in: Nazca. --- Image by © Charles & Josette Lenars/CORBIS
ca. July 1977, Nazca, Ica Region, Peru --- The Nazca lines stand in Nazca, Peru. There is debate about exactly when and why the lines were formed. Some believe they served as an astronomical calendar for the Paracas and Nazca cultures, others that they served as ritual walkways from important ceremonial sites, and some even think they were created by alien spacecraft. --- Image by © Charles & Josette Lenars/CORBIS
ca. 200 B.C.-600 A.D., Nazca, Ica Region, Peru --- One of the Nazca lines depicting a hummingbird stands in Nazca, Peru. There is debate about exactly when and why the lines were formed. Some believe they served as an astronomical calendar for the Paracas and Nazca cultures, others that they served as ritual walkways from important ceremonial sites, and some even think they were created by alien spacecraft. | Located in: Nazca. --- Image by © Charles & Josette Lenars/CORBIS
ca. 200 B.C.-600 A.D., Nazca, Ica Region, Peru --- One of the Nazca lines depicting a spider stands in Nazca, Peru. There is debate about exactly when and why the lines were formed. Some believe they served as an astronomical calendar for the Paracas and Nazca cultures, others that they served as ritual walkways from important ceremonial sites, and some even think they were created by alien spacecraft. | Located in: Nazca. --- Image by © Charles & Josette Lenars/CORBIS