The northwestern third of the range is separated from the remainder of the mountains by the Vallis Alpes, a wide rift valley that extends from a narrow cleft in the Montes Alpes to the northeast, reaching the edge of the Mare Frigoris.
Alpes-Maritimes | Gap, Hautes-Alpes | Hautes-Alpes | Alpes-de-Haute-Provence | Rhône-Alpes | Embrun, Hautes-Alpes | Provence-Alpes-Côte d'Azur | Beausoleil, Alpes-Maritimes | Castillon, Alpes-Maritimes | Castellar, Alpes-Maritimes | Alpes | Sauze, Alpes-Maritimes | Saint-Firmin, Hautes-Alpes | Opio, Alpes-Maritimes | Vue des Alpes | Vars, Hautes-Alpes | Vallis Rheita | Vallis Bouvard | Vallis Bohr | Vallis Baade | Vallis Alpes | Tournefort, Alpes-Maritimes | TER Rhône-Alpes | TER Provence-Alpes-Côte-d'Azur | Rhone-Alpes | Provence-Alpes-Côte-d'Azur | Pierrerue, Alpes-de-Haute-Provence | Niger Vallis | Montes Alpes | Mirabeau, Alpes-de-Haute-Provence |