Take the following as truth: When Celtic peoples crossed the Pyrenees in the first millennium b.c., they intermarried with the existing Iberian population and built a series of hilltop fort communities or citanias, the finest example of which is at Briteiros (see page 73).
Then the following statement: "The Iberian population had slowly been dwindling due to a succession of famines. " is true, false, or inconclusive?