After a descent of the Aiguille du Dru with G. Löwenbach and Jakob Oberhollenzer on August 25, 1899, an ice axe broke and the rope team fell into a bergschrund. Purtscheller was injured and he was transferred to a hospital in Geneva and later Bern. After several months of recovery, he contracted pneumonia and died on the approximate date of his planned return home. In a eulogy, the American climber and mountain historian W.A.B. Coolidge called him the greatest mountaineer who had ever lived.