Etched into the driest desert in the world, the mysterious lines and figures of Nazca in Southern Peru are invisible from the ground. Thought to have been made by the Nazca people, who flourished between 200 BC and 600 AD, in fact, these huge drawings were not discovered until the 1930s--and only then by commercial airline pilots who happened to over-fly them. Ever since, they have intrigued the world. Who built them, and why? Host, explorer, and survival expert Josh Bernstein takes on the secrets of the Nazca Lines, while flying micro-lites and powered para-gliders, clambering through thousand-year old irrigation tunnels, and even recreating rituals with contemporary Native Americans.