Check your local listings.
Are they ancient road maps or messages for visiting aliens? Lying at the foothill of Peru's Andes Mountains is the site of one of the world's greatest mysteries. Etched, as if by giants, onto its arid, moonscape plains are immense lines that stretch for miles, forming strange shapes recognizable only from the air. Now, a team of specialists from around the globe has come to southern Peru to investigate the Nasca Lines in the hope of uncovering their secrets.