About twelve thousand year ago great cataclysms happened on Earth. Some legends mention the great floods and tsunamis that wiped out coastal civilizations. In recent decades we have discovered the ruins of several cities under water near the coasts of some continents, pointing to a sudden rise in the water level of oceans. Tremendous earthquakes leveled whole cities built out of megalithic stones, throwing them around like matches. There are indications that the Andes mountains rose up at that time. Once at sea level, their coastal cities are now at an altitude of about 12,000 feet above sea level. here we find the megalithic site of Puma Punk, and Teotihuacan, or Tiwanaku. In Teotihuacan, there is a megalithic stone with carvings, representing a calendar of a different solar year. This solar year corresponds with a different Earth orbit around the Sun before the cataclysms happened. It was made by an advanced civilization that some call Atlantis, that had great astronomical knowledge that they incorporated in the hieroglyphic style of information embedded in this monolithic block of stone.
Go to my article of The Sun Gate Calender of Tiahuanaca (Tiwanaku) to get an overview of how the Sun Gate is a visual structure of a complex calendar.