If ever a society could be said to meet all the mythological criteria of the next lost civilization—a society that ticks all the boxes—is it not obvi… - Graham Hancock

This ability to zoom in at very high resolution on a time window just 21 years wide and almost 13,000 years in the past comes to us courtesy of an amazing scientific resource consisting of ice cores from Greenland. Extracted with tubular drills that can reach depths of more than 3 kilometers, these cores preserve an unbroken 100,000-year record of any environmental and climatic events anywhere around the globe that affected the Greenland ice cap. What they show, and what Allen is referring to, is a mysterious spike in the metallic element platinum — 'a 21-year interval with elevated platinum,' as he puts it now — 'so we know that was the length of the impact event because there's very little way, once platinum falls on the ice sheet, that it can move around. It's pretty well locked in place.

After the first Neanderthal skeletal remains were identified in Europe in the nineteenth century it was, for a very long while, one of the fundamental unquestioned assumptions of archaeology, a matter taken to be self-evidently true, that other "older", "less-evolved" human species never attained, or even in their wildest dreams could hope to aspire, to the same levels of cultural development as Homo sapiens. During more than a century of subsequent analysis, and despite multiple additional discoveries, the Neanderthals continued to be depicted as nothing more than brutal, shambling, stupid subhumans—literally morons by comparison with ourselves. Since the beginning of the second decade of the twenty-first century, however, and with increasing certainty as the evidence has become overwhelming, a new "image" of the Neanderthals as sensitive, intelligent, symbolic, and creative beings capable of advanced thought processes and technological innovations has taken root among archaeologists and is set to become the ruling paradigm.

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