 The Roman town of Noviomagus was probably Nyons.This town and Vasio (Vaison-la-Romaine) were not on the mountains.They were at the foot of the first prealpine ridges, at the edge of the plain of the Rhône (the Dentelles de Montmirail were just to the south of Vasio; the Éssaillon, Garde-Grosse, Saint Jaumes and Vaux formed a half crescent by Noviomagus).