The Solutreans were a remarkably society, the most innovative,adaptive and inventive people of the time. They were among the first to discover the value of heat treating flints to increase strength. Bradley was keen to discover if Solutrean flintknapping styles matched Clovis techniques. A trawl through the unattractive flint offcuts in the storerooms of a French museum convinced him of the similarities, even though five thousand kilometres lay between their territories....