The Massif des Calanques, Massif du Grand Caunet and Massif de la Sainte-Baume are located to the extreme southeast of the Bouches-du-Rhône and cover an area of around 64,000 acres, stretching from the southern edge of Marseille to the border of the Var region.
This geographical entity is characterised by a ragged relief, with altitudes varying from 0 – 1,000 m and often-steep slopes in its coastal areas. The relief gradually smoothes out towards the northeast (Sainte-Baume mountain), but remains fairly uneven.