Squatters, scribble threaten Peru's Nazca lines

A tiny, hand-painted sign mounted on a flimsy barbed wire fence warns visitors to Peru's Nazca lines: "No entry. Area off-limits."

It's not much of a deterrent.

The latest threat to the vast U.N. World Heritage site where the enigmatic shapes and lines, stylized figures of birds and animals were etched in the desert some 2,000 years ago, is a camp of around 30 shacks that appeared in August.