On Carvajal's account, therefore, not only did the Amazon have cities but its cities were comparable in size to those of Europe at the same time. He … - Graham Hancock

At six thousand or more years older than the stone circles of Stonehenge, the megaliths of Göbekli Tepe, like the deeply buried megaliths of Gunung Padang, mean that the timeline of history taught in our schools and universities for the best part of the last hundred years can no longer stand. It is beginning to look as though civilization, as I argued in my controversial 1995 bestseller Fingerprints of the Gods, is indeed much older and much more mysterious than we thought.

Ancient Egypt, like that of the Olmecs (Bolivia), emerged all at once and fully formed. Indeed, the period of transition from primitive to advanced society appears to have been so short that it makes no kind of historical sense. Technological skills that should have taken hundreds or even thousands of years to evolve were brought into use almost overnight—and with no apparent antecedents whatever. For example, remains from the pre-dynastic period around 3500 BC show no trace of writing. Soon after that date, quite suddenly and inexplicably, the hieroglyphs familiar from so many of the ruins of Ancient Egypt begin to appear in a complete and perfect state. Far from being mere pictures of objects or actions, this written language was complex and structured at the outset, with signs that represented sounds only and a detailed system of numerical symbols. Even the very earliest hieroglyphs were stylized and conventionalized; and it is clear that an advanced cursive script was it common usage by the dawn of the First Dynasty.

Not for the first time I felt myself confronted by the dizzying possibility that an entire episode in the story of mankind might have been forgotten. Indeed it seemed to me then, as I overlooked the mathematical city of the gods from the summit of the Pyramid of the Moon, that our species could have been afflicted with some terrible amnesia and that the dark period so blithely and dismissively referred to as `prehistory' might turn out to conceal unimagined truths about our own past. What is prehistory, after all, if not a time forgotten — a time for which we have no records? What is prehistory if not an epoch of impenetrable obscurity through which our ancestors passed but about which we have no conscious remembrance? It was out of this epoch of obscurity, configured in mathematical code along astronomical and geodetic lines, that Teotihuacan with all its riddles was sent down to us. And out of that same epoch came the great Olmec sculptures, the inexplicably precise and accurate calendar the Mayans inherited from their predecessors, the inscrutable geoglyphs of Nazca, the mysterious Andean city of Tiahuanaco ... and so many other marvels of which we do not know the provenance. It is almost as though we have awakened into the daylight of history from a long and troubled sleep, and yet continue to be disturbed by the faint but haunting echoes of our dreams