Robb, Graham. 2014. The Discovery of Middle Earth: Mapping the Lost World of the Celts. W. W. Norton & Company. 416 pp.
Graham Robb first conceived of the ancient Celtic map of the world and had an inkling of the mysterious Mediolanum in a cottage on the upper Thames. The first line on that map was the ancient Via Heraklea from Sagres at the southwest tip of Spain to the Matrona Pass in the Alps a thousand miles away. This line is that of the angle of the midsummer sunrises and midwinter sunset of two millennia ago. What he discovered, as it gradually unfolded, turned out to be a grid of places, extending over that whole region and beyond, even to the distant corners of the British Isles, which was the world of the Celts, the diverse cultural and linguistic grouping of peoples that dominated the region before the Roman conquest. Robb depicts them as a scientifically and mathematically advanced society, who, without GPS or Google, nevertheless had a network of map locations, sacred and military, connected by roads and tracks, or simply by the bearings of sunrise and sunset, which among other things, would have facilitated long distance travel. Messages could be relayed by shouts from carefully chosen points or by signal fires, much faster than horses could travel, as noted by Caesar in his Gallic Wars.
Celtic culture lasted from possibly the late Bronze Age until the extinction of the Druids around 600AD. An Iron Age society that was literate, to judge by surviving writing tools and inscriptions, but who left few written records of their religion, culture, etc. Much of what we can learn suggests strong influence from the astronomy and geography of the Greeks. Most of what we know is second hand from the Greeks and Romans, with some possible corroboration from ruins, coins and other artifacts.
Robb is a geographer/historian, author of books on Paris and provincial France. Place names are key evidence for his inquiry into Celtic prehistory. Often the places themselves are undistinguished hillocks, valleys, low ridge tops, few producing any significant signs of habitation or artifacts. What they represent are not forts or settlements, which follow the dictates of the natural environment, but nodes in a cartographic net laid over the land, following the dictates of the heavens, particularly the polestar and the sun. He shows how the Greeks’ knowledge of geography was carried over by the Celts, tied into the great sacred centers of Hellas, like Delphi. This seems to have worked well even in the dense and nearly trackless forests that covered much of the region (now reduced to small, heavily managed remnants) and that contained many of the sacred places of the Celtic culture.
Of the Druids, he says their twenty year course of study taught the size and shape of the earth and the universe, the motion of the heavens and stars and the will of the gods. Using Pythagorean geometry, they could map the lines of the meridian, equinoxes and solstices onto their lands, basing the system on the great center at Mediolanum Bituriges (Chateaumelliant) and the Gallic capital at Alesia, the place they made their last stand against Julius Caesar. Robb ties the Druids’ cosmology and geography to the politics and military strategy followed by the Gauls, which eventually proved to be their weakness in the face of the ruthlessly pragmatic Romans.
Rome ended up pursuing the remnants of the Druids to the farthest ends of the British Isles, and the firm establishment of Christianity seems to have snuffed out this remarkable culture, at least its Greek-influenced scientific understanding of the cosmos. Robb ends with an exploration of the traces that remain in the Roman and “Royal” roads and ancient sites in England, Scotland and Ireland. He ties this to historical events, like the revolt of Queen Boudica. He offers his own anecdotes of searching for the traces of the lost world among the shopping centers, parking lots and housing developments of modern England. Human history has left deep marks on the surface of the Earth, not all of which are easily seen and touched, but which are accessible to those who know geometry and astronomy.
This book is full of ancient and modern geographic detail and full of historical speculations as well as documented accounts of wars in Gaul and Britain and journeys undertaken by intrepid Celtic tribes to distant parts of the world. There is a strong sense of might have been, had the conquering Romans not been so efficient at crushing the resistance they encountered from these astronomer-warrior-priests.