At the start of the 20th century, for the first mountain climbers, the Mercantour was a taste of adventure. Little by little, the summits of the chain were conquered, initially via the normal routes and then, with the arrival of modern mountain climbing, along the most difficult routes. From Victor de Cessole to Patrick Bérhault, the greatest names have been involved in climbing in the Mercantour. Today, whether they are snowy, icy or rocky, the reputation of certain routes is well established.