It is located above the Glacier du Géant, under the East face of Mont Blanc du Tacul and opposite the Aiguille du Midi.The mountain is a mix of snow and rock, and has many rock climbing routes. Popular alpine tours such as the north face climb of Mont-Blanc lead over the crest of the Pointe Lachenal. It was named after French alpinist and guide Louis Lachenal (1921-1955).