The Nazca Lines are enormous geoglyphs carved into the Nazca Desert in Peru, created between 500 BC and AD 500 by the pre-Columbian Nazca culture. The figures depict animals, humans, and geometric shapes, and are visible mainly from the air. They are believed to have had ceremonial or religious purposes, linked to water and fertility. The lines were made by removing the top layer of dark stones to expose the lighter sand underneath. Despite their age, they have been well preserved thanks to the dry and windless climate.
Some people argue that the lines were created as messages to, or by, extraterrestrial visitors.