Something like a phenonmenon

The other day I learned about the lines of Nazca, it was so cool! No one really knows for sure when or how they were formed, and there are some crazy theories too! One theory is that UFO's made them, some people think a man made them (which isn't feasable).... and some people think that the earth was just formed that way.

Here is an overview of what they look like all together.

Here is the monkey.

Here is the spider.

Here is the bird.