The Nazca Lines are so large that the people who scratched them into the Peruvian desert over 1,500 years ago could never have seen them whole — the giant hummingbird, monkey and spider reveal their shapes only from the sky. Between roughly 500 BCE and 500 CE, the Paracas and Nazca peoples made them by lifting the dark, iron-stained pebbles off the ground to expose the pale clay beneath. They survive because of the setting: one of the driest places on Earth, almost windless and barely touched by rain, where the exposed subsoil hardens into a protective crust. More than 800 straight lines, some running for kilometres, cross around 450 square kilometres of plateau, alongside some 300 geometric shapes and over 70 animal and plant figures — from a 47-metre spider to a condor stretching 134 metres. Why the Nazca made them is still argued over; the leading ideas tie the lines to water and fertility rituals in a desert where rain meant survival.
Because the figures resolve only from above, most visitors climb into a small propeller plane at Nazca and bank hard over each shape as the pilot names it — the hummingbird, the condor, the monkey, the humanoid nicknamed the astronaut. Those who prefer solid ground can climb a steel tower beside the Pan-American Highway, which was built right across part of the Lizard, for an angled look at the Tree and the Hands. A UNESCO World Heritage Site since 1994, it still gives up secrets: a crouching cat surfaced on an eroding slope in 2020, and in 2024 an AI-guided survey nearly doubled the tally of known figures, spotting hundreds too faint for the eye. Standing before that scale and precision, drawn by people with no way to see their own work from above, remains one of archaeology's great unsolved puzzles.