Between Marseilles and the Rhône, at the bottom of the northern slope of the mountain chain of Nerthe, (an evocating and scented name, coming from the Provençal word Nerto, in French : Myrte) : Dominating the plain, which extends towards the banks of Etang de Berre and Marignane, here is Châteauneuf-les-Martigues “Casteu-nou dou Martegue” – Far from 25 kms from Marseille, 10 kms from Martigues, 5 kms from Marignane : in the center of an area in an growing human and economic change.
As from the 7th century before J.C., people of the the mesolithic period moved in shelters under rocks and especially in the Grand Abri de la Font aux Pigeons. They began then to domesticate sheeps, wild at that time.
Excavations allowed prehistorians to identify a period called Castelnovian. Around the 6th millenium before J.C., with the cardial neolithic period, appeared the agriculture as well as the pottery.
Later on, the presence of celto-ligure indigene inhabitants is to be noticed, then, as from he 1st century after J.C., begins the roman occupation.
During the feodal period, Chateauneuf is wellkown with its castle the Castrum Novum, mentioned as from 11th century. The vestiges of the castle, and the village and its bottom, dominated the actual agglomeration. This place named Castellas has been the witness of the birth and of the extension of the new village.