 Before the discoveries at Hallstatt and La Tène, it was generally considered that the Celtic heartland was southern France, see Encyclopædia Britannica for 1813.Myles Dillon and Nora Kershaw Chadwick accepted that "the Celtic settlement of the British Isles" might have to be dated to the Bell Beaker culture concluding that "There is no reason why so early a date for the coming of the Celts should be impossible".Martín Almagro Gorbea proposed the origins of the Celts could be traced back to the 3rd millennium BC, also seeking the initial roots in the Beaker period, thus offering the wide dispersion of the Celts throughout western Europe, as well as the variability of the different Celtic peoples, and the existence of ancestral traditions and ancient perspective.