I was looking at Windows Live and Google maps tonight and came across something interesting. The Nazca Lines in Peru are truly an amazing sight. I wish I could go see them. As it is, I am stuck looking at photos and maps.
Ah, the maps are an issue. Looking at the aerial maps of the site, the Nazca Lines aren't visible from the air unless you are lower than approximately 200 feet. That would make it impossible for them to be used as a signal marker for alien space craft.
Of course, there are still ways that these lines could have been viewed from a much higher altitude hundreds or thousands of years ago, ie line them with chalk or set them on fire using oil. But, I have not read any hint of chalk or charcoal being in the area in massive quantities.
Just a though!
