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Lofty Thought of the Day
- Category: Science & Technology
(Photo via Diego Gurgel) by Stephen Messenger, Porto Alegre, Brazil on 12.28.09 - Science & Technology Treehugger.comBecause they are difficult to see from the ground, most geoglyphs went unnoticed by locals.
With the aid of satellite imagery from Google Earth, soon archeologists in Brazil will be finding more and more large geometric designs carved into the ground in the Amazon rainforest. The geoglyphs are believed to have been sculpted by ancient people from the Amazon region around 700 years ago, though their purpose is still unknown.
So far, nearly 300 geoglyphs have been identified, but with advances in satellite imaging--and increased clearing of the jungle coverage--scientists are hoping to discover many more of these strange, geometric designs.
One of the factors that contributed to so many geoglyphs being undetected prior to the aid of satallites is their enormous size. According to leading geoglyph scientist Alceu Ranzi, his latest discoveries--five sets of geometric shapes, with circles, squares and lines--can measure more than a mile from one extreme to another.
You do not see them in field. There is a difference in the color of grass but is very thin. If there were no satellite images, there would be no possibility [of making these new discoveries]...MORE...
