Okay, spent about 15 minutes researching the artifacts in Peru which makes me an armchair idiot of sorts on this topic. I really am not a expert in culture and/or archeology but when researching a topic I always exlude supernatural and conspiratoral websites and go to the people who are trained in the area in question. But even reviewing the "Crystallinks.com" paranormal site you linked me too which quotes the Fraud Erich von Daniken (chariots of the gods..a book that has been shamefully discredited within the archological community) indicates that much evidence exists for religious purposes for the drawings. More scientific sites are much clearer in their theory.. check this out....
"The purpose of the drawings is uncertain, but it is believed to be connected to their beliefs and economical systems. According to anthropologist Johan Reinhard, the Nazca people believed that mountain gods protected humans and controlled the weather. These gods also affected water sources and land fertilitysince they are associated with lakes, rivers and the sea. Each figure might have a different meaning for the Nazca people depending on their social class.
The straight lines, as sacred paths, from Nazca to Andean highlands are still used to bring water. Today, these lines are maintained for the religious merit of the people. The triangles and trapezoids are made for the flow of water and are placed near the river. People often have ceremonies beside the water flow. The figure of spirals depicts seashells and the ocean, and the figure of zigzags illustrates lightning and river. The bird figures, representing a heron, pelican or condor, are believed to be signs of faithfulness to the mountain gods. Other sea birds are associated with the ocean. Monkeys and lizards represent the hope for water. Shark or killer whale motifs show the success of fishing. Spiders, millipedes and plants are associated with the rain. Even though the Nazca River was located near this cultural area, river water was not enough to support their agricultural needs.
Some questions are still debated among specialists. Why were so many lines necessary? How and why did people draw such large figures on the ground without any aerial vision or aerial equipment? We may never understand the true meaning of the Nazca Lines, but we can decipher pieces of the traditional Andean people's belief system from these great geoglyphs."
http://www.mnsu.edu/emuseum/prehistory/ ... nazca.htmlNow this subject demands a quick compare/contrast of the credulous mind versus the mind that craves real information. Some people would see these figures, not knowing crap about crap about Peruvian culture and just immediately assume something absolutely fantastical, supernatural or of alien origin was going on. In absense of any information whatsoever except like minded credulous people, they would even assume alien spacecrafts directed or assisted the Indians in making them. Remember that unexplained only means unexplained and humans have a less than credible history of assigning supernatural answers to things we don't understand...lightning being bolts from heaven, etc.
the scientific, skeptical or rational person would seek information from sources that may prepose to have explanations that tend to make sense within the known body of information that exists, not create fantastical scenarios around an wonderous event or artifact.
Now, if one of those giant sculptures was a picture of ET on his bycycle phoning home, YOU WOULD THEN HAVE AN INTERESTING THEORY.
But alas, they all depict items common to their culture and religious worship is within the realm of believablility.
Why did they do it? It appears probably to appease their particular gods as they were looking down on them. How? I don't know but physically it is within the realm of possible and also the calculations aren't really that difficult to follow.