Oh I absolutely agree! There is absolutely no question at all that these figures which CANNOT be seen from the ground level are purposely built to be seen from the air. It is a no brainer without question! The cause of the effect came from the air/heavens period... And there are too many correlations between cultures that had absolutely no clue each other even existed. There is a central universal cause that created the resulting effect.
And get this (from some old notes that I have--no sources noted):
The Nazca Lines are estimated to have been created between approximately 200 BC and 600 AD. That's a very long development time.
Key Points on Dating:
Earliest Geoglyphs (c. 200 BC - 100 AD): Some of the simpler lines and shapes are believed to date back to the early stages of the Nazca culture, possibly even overlapping with the earlier Paracas culture, which also created geoglyphs in the region.
Classic Period (c. 100 AD - 450 AD): The majority of the more complex and elaborate geoglyphs, including the famous animal figures like the hummingbird, monkey, and spider, are thought to have been created during this period. This corresponds to the height of the Nazca civilization, when their society was well-organized and capable of large-scale projects.
Later Geoglyphs (c. 450 AD - 600 AD): Some later lines and figures might have been added toward the end of the Nazca culture, as the society began to decline.
Dating Methods:
Radiocarbon Dating: Organic materials found near the lines, such as wooden stakes (get that: wooden stakes--What The Heck) used to mark the geoglyphs, have been radiocarbon-dated, providing a general timeframe for their creation.
Ceramic Analysis: Pottery shards found around the lines have been dated and linked to different phases of the Nazca culture, helping to establish a chronological framework. Stratigraphy: Studying the layers of soil and rock in and around the lines can provide additional clues to their age. Overall, the dating of the Nazca Lines suggests they were created over several centuries, with the most active period of geoglyph creation occurring during the height of the Nazca culture from around 100 AD to 450 AD.