Bollène is acommune located in the north of theVaucluse department next to the junction ofDrôme,Ardèche andGarddepartments. Located near major communication routes, the city (old town) occupies the northern end of a sandstone plateau where lie the communes ofMondragon,Mornas,Uchaux andLagarde-Paréol. The rest of the town, including the lower town, stretches over a fertile plain which rests on a large layer of clay.[3]