One of his most notable first ascents was of the Pain de Sucre du Soreiller, a granite peak in the French Massif des Écrins, which he climbed in 1913 with Guido Mayer (an Austrian client with whom he climbed many peaks in the Dolomites and other parts of the Alps). This mountain was renamed the Aiguille Dibona in his honor. Dibona developed a long-term and almost symbiotic friendship with Mayer and his brother.