Beside these mountains, the plateau is crossed over from north to south by the summits of the Connest Mountain (Peyrouse, Connex) and of the Sénépy. These mountains overlook a succession of four lakes of glacier origin called the Laffrey lakes. From north to south, these lakes are composed of the lac Mort, the Grand lac de Laffrey, the Petichet lake, the Pierre-Châtel lake. Close to the Pierre-Châtel lake can be found one of the so-called Seven Wonders of Dauphiné, a natural arch called the Pierre Percée.