
A few kilometers away, the Petit Luberon is the closest relief to the Alpilles. It forms an anticlinal fold (arch-shaped fold) orientated east-west, between the plain of Cavaillon and the combe of Lourmarin. Its northern flank dominates the valley of Coulon-Calavon, and its southern flank, the Durance valley. The mountain range of the Luberon is limestone, low and extends from east to west between the Alpes-de-Haute-Provence and Vaucluse.