The department pulls its name of the riverIsère. His inhabitants are conscripts the Isérois and the Iséroises. The department of a surface of 7 431 km² is surrounded with seven departments: The Drôme in the southwest, the Ardèche, the Loire and the Rhône on the West, the Ain in the North; the Savoy in the northeast and the Hautes-Alpes in the southeast. The relief of Isère is very heterogeneous : ■ The high mountain with her Chaîne de Belledonne, le Massif du Taillefer, les Écrins Among which one of the summits, the Pik Lory with its 4088m of height is the peak of the department. ■ The pré-Alpes with the Massif de la Chartreuse, the Vercors and the Diois in the extreme south of the department, ■ The plains of the valley of the Rhône where is the point the bottom with 134 m of height, This vast department shares eternal snows of summits and the sun of Southern Isère.