From hieroglyphs indecipherable even today to stories of hikers found dead in unexplainable positions, we count 15 mysteries that have yet to been solved or even understood br br Warning, text spoilers below! br ----------------------------------------­--- br Voynich Manuscript, br Green Children, br Rongorongo, br Dyatlov Pass, br The Immortal Count, br Beale Ciphers, br Phaistos Disc, br Pollock Twins, br Alcatraz Prisoners, br Lost City of Atlantis, br Shugborough Inscription, br Wow! Signal, br Cicada 3301, br Georgia Guidestones, br Jack the Ripper