Planet Green - Original Air Date: Unknown
I stumbled across this program one Sunday morning. It's a science/exploration series with a genial British host -- think a less frenetic Bear Grylls. This episode investigates and discards many of the well-known theories about the Nazca Lines. Theories dismissed include astronomical mapping and alien construction. The host, Olly Steeds, talks to investigators, archeologists, and grave robbers. He is given hallucinogens by a shaman and visits a Nazca graveyard. Finally, he settles on a scientifically supported theory, that the lines were sacred pathways walked by pilgrims to the site. Both studious and entertaining, this series seems a good one to watch in the future.