humans as existed would probably travel to cluster along the southern coast, where the ocean currents brought warmer water down from near Madagascar, and where food was available both on the land and in the sea. He decided that these humans probably sheltered in caves - and so he looked along the coastline for caves that were sufficiently close to the then sea level7 to allow the humans to get to the water, yet sufficiently elevated that their contents weren’t washed away by storms and high tides. Eventually he found PP13B and had a local ostrich farmer build him a complicated wooden staircase so his graduate students didn’t fall to their deaths clambering to the cave mouth - and began his meticulous research. Marean’s paper, published in Nature eight years later, drily recorded a quite remarkable find.
There was ash, showing the inhabitants lit fires to keep themselves warm. There were sixty-four small pieces of rock fashioned into blades. There were fifty-seven chunks of red ochre, of which twelve showed signs of having been used to paint red lines on something — whether walls, faces, or bodies. And there were the shells of fifteen kinds of marine invertebrates, all likely to have been found in tide pools - there were shore barnacles, brown mussels, whelks, chitons, limpets, a giant periwinkle, and single whale barnacle that the Arizonans believe came attached to a whale skin found washed up on the beach.
How the community decided to dine on shellfish remains open to conjecture. Most probably the inhabitants saw seabirds picking up the various shells, cracking them on the rock shelves, and gorging themselves on the flesh within. Disregarding the so far unattested assertion8 that it was a brave man who ate the first oyster, the cave dwellers swarmed down to the oceanside and promptly wolfed down as many molluscs as they could find - eventually repeating what must have been this very welcome gastronomic adventure on every subsequent occasion that the tides generously provided them with more.
The experience had a signal effect on this small colony, and on humankind in general - which makes it all the more remarkable that the financiers of the local golf course chose “Garden of Eden” as their slogan. The effect was of far greater significance than might be suggested by a mere change of diet, from buffaloes to barnacles, from lions to limpets. The limitless abundance of nourishing food meant the settlers could now do what it had never occurred to them to do before - they could settle down.
They could at last begin to consider the rules of settlement - which included the eventual introduction of both agriculture and animal husbandry and, in good time, civilisation.
Moreover, their ochre colourings suggest that for the first time these cave colonists began to employ symbols - signs perhaps of warning or greeting, information or suggestion, pleasure or pain, simple forms of communication that would have the most enduring of consequences. An early seaside human might go down to a certain crab-rich tide pool and merely expect or hope that others would follow him. But then he might decide to create a sign, to use his recently discovered colour-making stick to mark this same tide pool with an indelible ochre blaze — ensuring at a stroke that all his cave colleagues would now be able to identify the pool on any subsequent occasion, whether its initial finder went there or not. Thus was communication initiated — and from such symbolic message making would eventually emerge language - one of the many kinds of mental sophistication that distinguish modern man.
4. DEPARTURES
The Atlantic, at its beginnings, was a very one-sided ocean, with many peoples distributed along its eastern coasts and yet for many thousands of years no one — no human or humanoid — on its western side. Moreover, its populated coasts were settled initially by newcomers from the continental heartlands, who had little experience with or aptitude for the ways of the sea. Not surprisingly it took a longtime for sailors to venture any distance from the coastline; it took thousands of years for the islands within the Atlantic to be explored; and it look an inordinately long time for anyone to cross the ocean. It was to remain a barrier of water, terrifying and impassable, for tens of thousands of years.
Today’s research, which permits this kind of certainty, is hugely different from the archaeological diggings and probing that went on before Victorian times. The unravelling of the human genome in 2,000 made it possible to find out who in antiquity settled where, and when, simply by examining in great detail the DNA of the present-day inhabitants. The romance of finding potsherds and pieces of decorative artwork remains, of course, but for speedy determination of the spread of humankind, no better way can be devised than the computerized parsing of the genetic record.
Communities were already forming on the Atlantic’s east side while native newcomers were still nervously pushing their way through the woodlands in the west. The first Neolithic peoples in the Levant had already created their world’s first town, Jericho. By now all the world’s peoples were Homo sapiens; no other humankind had made it beyond the end of the Palaeolithic epoch — and their advances, seen from this end of the telescope of time, seem to have taken place at an almost exponential rate. When Jericho was first founded - and this is when the western Atlantic was still essentially unpopulated - its inhabitants were busy carving stones and raising millet, sorghum, and einkorn wheat. Just a few thousand years later, when the first skin-wearing and shivering Ojibwe and Cree and Eskimos were doing their artless best to create the first hardscrabble settlements in the American north, men in the Fertile Crescent and beyond, in places as far away as Ireland, were already throwing pots, were raising dogs, pigs, and sheep, had created from stone the adze and the sickle blade, had built tombs and henges, had used salt to preserve their food, and were on the verge of smelting metals.
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Moreover, these easterners had also made their first boats. Very early settlers in Holland and France had first carved or scorched the interior of fallen trees as much as ten thousand years ago, producing dugouts that they used to navigate their rivers and swamps and cross some of the less formidable estuaries. But these craft were really just canoes, at once both unstable and elephantine, and without keels, sails, rudders, or the kind of freeboard necessary for even the most limited push into the sea. It was to be the Crescent, once again, where the first major advance occurred: in Kuwait, two thousand years later, there appeared a proper sailing craft, made of rushes and reeds and lacquered with bitumen, that was capable of journeying at least through the tricky and unpredictable waters of the Red Sea and perhaps beyond.
Oman also had such a boat, and in 2005 a very eager Omani sultan sponsored a crew of half a dozen to pilot a replica from Muscat to the Indian coast of Gujarat. The journey was to have been 360 miles, but the bitumen must have leaked, because the reeds in the hull became waterlogged three miles off the Arabian coast. The tiny craft promptly sank and everyone had to be rescued by a ship from the Royal Oman Navy.
5. SAILINGS
The Phoenicians were the first to build proper ships and to brave the rough waters of the Atlantic.
To be sure, the Minoans before them traded with great vigour and defended their Mediterranean trade routes with a swift and vicious naval force. Their ships - built with tools of sharp-edged bronze — were elegant and strong: they were made of cypress trees, sawn in half and lapped together, with white-painted and sized linen stretched across the planks, and with a sail suspended from a mast of oak, and oars to supplement their speed. But they worked only by day, and they voyaged only between the islands within a few days’ sailing of Crete; never once did any Minoan dare venture beyond the Pillars of Hercules, into the crashing waves of the Sea of Perpetual Gloom.
The Minoans, like most of their rival thalassocracies, accepted without demur the legends that enfolded the Atlantic, the stories and the sagas that conspired to keep even the boldest away. The waters beyond the Pillars, beyond the known world, beyond what the Greeks called the oikumenè, the inhabited earth, were simply too fantastic and frightful to even think of braving. There might have been some engaging marvels: close inshore, the Gardens of the Hesperides, and somewhat farther beyond, that greatest of all Greek philosophical wonderlands, Atlantis. But otherwise the ocean was a place wreathed in terror: I can find no way whatever of getting out of this grey surf, Odysseus