Explanation: These mysterious lines and shapes are in the desert in Southern Peru. For example, a giant hummingbird, a spider, and other mysterious shapes and straight lines can be seen. The Nazca lines are astonishing intricate geometrical designs and mathematical figures. The longest one is 1,000 feet and that's over 3 football fields long. The lines are between 4 inches and 12 inches deep and since there is almost no wind there, the patterns have stayed. The fact that these ancient people were able to create these patterns from the ground, not being able to see if from a birds eye view is a big mystery. There are many theories about why they were built, some believe that it could be mapping the movement of the sun or constellations. Also, it could be for ritual purposes and the ancient people wanted to sacrifice them.