 The arête, which runs over these peaks eastwards to Mont Pelvoux, is also called the "Grand Muraille du Glacier Noir".Five summits along this crest ("Ailefroide Central", "Pointe Fourastier", Pic Sans Nom, "Pointe Puiseux" and "Pointe Durand") exceed the 3,900 metre mark.On its left-hand side, the southern branch of the glacier is bounded by the eastern foothills of Pic Coolidge.