Sponsor North Face has verified to ABC News that American ski mountaineer Hilaree Nelson has gone missing during an attempt to ski down Manaslu in Nepal.
Nelson and her climbing companion Jim Morrison were on the ninth highest mountain in the world when Nelson disappeared.
Mountaineer Lukas Furtenbach told ABC News that he and others had been searching for her by helicopter.
Since Monday, but had so far been unsuccessful.
According to Outside magazine, the general director of the guiding organisation.
Morrison and Nelson were with confirmed that they had reached the actual top late Monday morning.