Rhône-Alpes is a region located in the east of france. The east of the region contains the westernmost part of the Alps and borders Switzerland and Italy. The highest peak is Mont Blanc, on the French-Italian border. The central part of the region comprises the river valleys of the Rhône and the Saône. The confluence of these two rivers is at Lyon. The western part of the region contains the start of the Massif Central mountain range. The region also borders or contains major lakes such as Lake Geneva and Lake Annecy. The Ardèche River flows through the southwest portion of the region, where it has carved the deepest gorge in Europe.