The Nazca Lines
Giant geoglyphs in Peru, only visible from above, were recently mapped using drones that revealed their possible connection to water rituals. These 2000-year-old lines span 450 square kilometers, forming shapes like hummingbirds, spiders, and geometric grids. Studies suggest they align with underground water sources, which is critical for survival in the desert region. First spotted in the 1920s, scientists still debate whether they served astronomical, religious, or practical purposes for the Nazca people.
