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Nazca lines in Peru are well known for their geometric precision and ancient images. It is assumed that these lines were created by ancient Nazca civilization almost 2,000 years ago, mainly motivated by religious considerations. Satellite images and publicly available images from airplanes and air balloons were studies, as well as on-site observations performed. The orientation, interconnectedness and quality of geoglyphs were evaluated. The results suggest that only a small portion of geoglyphs may indeed be very...