GÃ menos is a commune located in the region Provence-Alpes-C Ã te d'Azur in the Bouches-du-Rh Ã ne department in the south of France . GÃ menos is a commune east of Marseille in the Bouches-du-Rh Ã ne department in the Provence-Alpes-C Ã te d'Azur region in southern France .