Must-see in the Chamonix Valley, Lac Blanc exhibits an unforgettable panorama on the Mont Blanc Massif. The itinerary described here offers a much more bucolic setting than the alternative route by the Flégère. Two routes are possible: either the trail of the Col des Montets which allows taking the Grand Balcon Sud or the one of Tré-le-Champ passing by a series of ladders near the imposing Aiguillette d’Argentière. The passage of the ladders spices things up a little, but remains without risk: the access is totally secured. However, they can prove to be insurmountable for people who are afraid of heights. Moreover, a very short passage of two meters obliges to walk along the cliff on the edge of a ridge also safe, but 50 m above the ground.