They are striking works of art by any standard: but what purpose did they serve? Some of the theories put forward suggest that the lines were ancient running tracks, runways for aliens, and even a giant astronomical calculator. But after decades of misunderstanding, modern archaeology may finally have an answer to the puzzle of the Nasca lines.
Score: 8.1
Score: 7.6
Score: 7.2
Score: 7.5
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Score: 5.9
