Unlike the other drawings this appears on the side of a hill rather than on the desert.
Here you can see him in the center of the picture.
This is a closer picture
He is referred to as the Astronaut because it looks like he has a "space helmut" on his head. But, perhaps it is just a representation of a Nazca Indian wearing a mask. Or maybe it is, as some people believe a representation of a visitor from a long time ago. Which is brings us to the lines that were also drawn by the Nazca Indians.