the nazca lines are a series of geography located in the nazca desert . The Lines were made by removing the iron-oxide coated pebbles which cover the surface of the desert. When the gravel is removed, they contrast with the light color underneath.
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.