The Most Mysterious Scientific Puzzles That Remain Unsolved

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5. The Sajama Lines – The World’s Largest Geoglyphs

Stretching over 8,700 long hauls in Bolivia, the Sajama Lines are one of the most emotional ancient creations. These impeccably straight paths were made by Indigenous people over 3,000 times agone , forming a giant web- suchlike pattern. But why they were erected and how they managed to keep them so precise is still a riddle.