northwestern spurs of the Graian Alps (q.v.) in southeastern France between Lake Geneva (north), the middle Rhône River (west), and the Arc and Isère river valleys (south). The highest peak is Pointe de la Grande Casse (12,631 feet 【3,850 m】), a part of the Massif de la Vanoise and located in Vanoise National Park. Other subranges include Beaufortin, Bauges, Bornes, and Chablais. The Mont Blanc group sometimes is considered part of the Savoy Alps. Tourism and outdoor recreation are the main activities of the region.