Archaeology is a deeply conservative discipline and I have found that archaeologists, no matter where they are working, have a horror of questioning … - Graham Hancock

The entire pre-Columbian literature of Mexico, a vast library of tens of thousands of codices, was carefully and systematically destroyed by the priests and friars who followed in the wake of the conquistadors. In November 1530, for example, Bishop Juan de Zumárraga, who had shortly before been apointed 'Protector of the Indians' by the Spanish crown, proceeded to 'protect' his flock by burning at the stake a Mexican aristocrat, the lord of the city of Texcoco, whom he accused of having worshipped the rain god. In the city's marketplace Zumárraga 'had a pyramid formed of the documents of Aztec history, knowledge and literature, their paintings, manuscripts, and hieroglyphic writings, all of which he committed to the flames while the natives cried and prayed.'
More than 30 years later, the holocaust of documents was still under way. In July 1562, in the main square of Mani (just south of modern Merida in the Yucatan), Bishop Diego de Landa burned thousands of Maya codices, story paintings, and hieroglyphs inscribed on rolled-up deer skins. He boasted of destroying countless 'idols' and 'altars,' all of which he described as 'works of the devil, designed by the evil one to delude the Indians and to prevent them from accepting Christianity.' Noting that the Maya 'used certain characters or letters, which they wrote in their books about the antiquities and their sciences' he informs us: 'We found a great number of books in these letters, and since they contained nothing but superstitions and falsehoods of the devil we burned them all, which they took most grievously and which gave them great pain.

all we ever needed to do to rediscover that knowledge was to measure the height and base perimeter of the Great Pyramid and multiply by 43,200! How likely is this to be an 'accident'?

The fullest account we have of Oannes is found in surviving fragments of the works of a Babylonian priest called Berossos who wrote in the third century BC. [...] Oannes did not do his work alone but was supposedly the leader of a group of beings known as the Seven Apkallu — the "Seven Sages" — who were said to have lived "before the flood" (a cataclysmic global deluge features prominently in many Mesopotamian traditions, including those of Sumer, Akkad, Assyria and Babylon). Alongside Oannes, these sages are portrayed as bringers of civilization who, in the most ancient past, gave humanity a moral code, arts, crafts and agriculture and taught them architectural, building and engineering skills.