Abstract: | Summary. How can archaeologists combine and use C14 determinations when they have irregular recalibrated dates? This question is solved by an example with six determinations from the Bronze Age settlement of El Castillo in the mountains of eastern Spain. For the first time we can date precisely the end of the Eneolithic to 2150–2110 BC, and the start of a Bronze Age expansion stage by 1960 BC. Each has a distinctive material culture; that of the Bronze Age stage is linked closely to the climax of the Motillas in La Mancha, and more distantly to El Argar in SE Spain. |