On 25 January 2018, during her fourth attempt of a winter ascent of Nanga Parbat, and Mackiewicz's seventh attempt, they reached the summit from the Diamer side. Revol noticed Mackiewicz's bad condition and started taking him down. According to Revol, he could not walk, see or communicate and was bleeding profusely from his mouth and nose; he had developed severe frostbite and snow blindness. She secured him from the wind in a crevasse, called for help and started the long descent.