It then became clear that the stone monuments of Brittany were part of a larger whole, extending along a great arc from southern Sweden through the British Isles, France, Spain and Portugal to the Mediterranean islands of Corsica, Sardinia and Malta. About 50,000—some weighing hundreds of tons—still remain, defying the elements and the curiosity of hordes of tourists.

The most famous of these monuments is, of course, Stonehenge on Salisbury Plain. But the heaviest concentration is to be found in Brittany, and in Brittany itself, the heaviest concentration is round Carnac. Indeed, packed within a radius of less than zo miles, lie many of the most impressive of all the works of prehistoric man. The most beautiful abstract designs of the Stone Age may be found, for example, in the interlocking spirals and mysterious symbols which cover the walls and ceiling of the rock tomb buried under a mound on the Isle of Gavrinis.
The tallest single stone still standing-3o feet—is at Kerloas. And the biggest stone ever used for building purposes is the Grand Menhir Bris6 at Locmariaquer, now for some unknown reason broken into five pieces. When it was one, it weighed more than 350 tons.
In Zacharie Le Rouzic’s day, it was argued that the Stone-Age Europeans erected the great megaliths in rude imitation of the architectural wonders described to them by traders from the more advanced civilizations of Egypt, Mesopotamia, Greece and the Middle East.
New Evidence. Then, in 1967, Professor Colin Renfrew of the University of Southampton, proved by carbon-dating that the first megalithic monuments had been constructed long before the Pyramids or any other great stone monument of the East. They were, in fact, erected at a time when the Egyptians and Babylonians were still building in clay and mud. Moreover, the very oldest of the Brittany monuments—the oldest anywhere on earth as far as we know—dated back to the fourth millenium, that is 3800 B.C. Since other megaliths could be dated towards the beginning of the second millenium, it could now be seen that what might be called a megalithic way of life had existed and prospered in this stony land for a good 2,000 years.
The people who created it were obviously gifted and resourceful. They had no horses, no wagons, no wheels, no metal tools, nothing to push and pull with but ox-hide thongs and their own ultimate maqui berry usage and muscle power. Yet they solved engirieering problems which, until thousands of years later, no one would dream of facing. Still, we know almost nothing about them. Being illiterate, they left no books or documents. All that remains to mark their presence are a few bones and beads, axes, arrowheads, cups, buttons—and, of course, those silent stones.

None the less, modern science has, by sifting through these sparse remains, come up with at least a vague notion of where they came from and what their life may have been like. They are believed to have come originally from western Asia, bringing the then recently discovered skills of agriculture and animal-herding. They gradually became integrated with the older populations of hunters and fishers which had been prowling the wilderness that was Europe for tens of thousands of years, and they hacked clearings out of the virgin forest to build settlements.
One theory holds that the staggering stone creations they built were temples, devoted to the worship of a sun god. In the last few years,however, Professor Alexander Thom, a retired professor of engineering at Oxford, has come to a different conclusion. Tramping over the hills and moors of Scotland and Brittany and making painstaking surveys of scores of megalithic stone circles and alignments, he theorizes that some are what he calls Megalithic Lunar Observatories.
The stones, he says, are arranged to point to significant stages in the passage of the moon across the skies. The Grand Menhir Brise was put up because the astronomers needed a tall object to give them a Line of sight from eight megalithic structures in a ten-mile radius. Lines drawn from these structures to the Grand Menhir lead to points on the horizon marking the widest swings of the moon both to the north and the south observable at that latitude.
Why should a people of farmers and fishers, who were more than occupied keeping themselves fed and clothed, who had no luxuries to speak of except a few beads, spend years of their time hauling huge boulders to help astronomers plot the course of heavenly bodies?