The bizarre Nazca Lines were created thousands of years ago (between 200BC and 600AD) using simple tools to scrape away the dark pebbles and reveal the light sand underneath.
Although they’re called the Nazca lines, the famous geoglyphs also feature hummingbirds, spiders, monkeys, lizards and parrot. But nobody’s really sure why the Nazca people went to all this effort - the images are so large that they couldn’t have seen them without some sort of aircraft, and that’s not very likely as the lines predate manned flight by just a few years.
Nazca Lines at Google Maps
Nazca Lines at YouTube