What if I told you there might have been advanced civilizations on Earth long before the ones we know about? 🌍🏛️ Some scientists and historians believe there’s evidence that hints at incredible societies that existed tens of thousands—or even millions—of years ago. From strange ancient structures that seem too advanced for their time to mysterious artifacts that don’t fit into our history books, the clues are mind-blowing. Could these lost civilizations have been wiped out by massive disasters, leaving behind only fragments of their stories? 🌋🌊 Some think the myths of Atlantis and other legendary places might actually be based on real events. Credit:br CC BY 2.0 Gavin Schmidt: by NASA Goddard Space Flight Center, Silurian: by Matthew Wells, Doctor Who and the Silurians British Broadcasting Corporation (BBC) br The Time Machine Warner Bros. and co-producers br Global Temperature: by NASA's Goddard Space Flight Center: Kathryn Mersmann, Kate Ramsayer, Gavin A. Schmidt, Denbora geologikoa: by Koldo Biguri, CC BY-SA 4.0 , Earth: by Cameron Beccario, Bright Angel: by NASAJPL-CaltechASUMSSS, Animation is created by Bright Side.