LESSON 2 · History's Greatest Riddles
Drawings for Giants
The Nazca Lines are massive geoglyphs etched into the desert floor of southern Peru, some stretching over 300 meters. They depict animals, plants, geometric shapes, and human figures created by removing reddish surface pebbles to reveal lighter ground beneath.

Because the desert receives almost no rain, the images have survived for roughly two thousand years. Researchers using aerial imaging and AI have recently discovered hundreds of previously unknown lines, and the new finds point toward the Nazca people using them as ritual and processional pathways rather than as a star calendar.