Nicolas Jaeger

Nicolas Jaeger (20 October 1946 – 27 April 1980) was a French physician and alpinist.
Early life.
Jaeger was born on 20 October 1946 in Boulogne-Billancourt, France, the son of photographer Janine Niépce. He made more than 100 solo ascents in the Mont Blanc massif, including more than a dozen first ascents.
Career.
Jaeger became a mountain guide in 1975. On 15 October 1978, he participated in the first French ascent of Mount Everest. The team leader was Pierre Mazeaud. Other team members included Jean Afanassieff and Kurt Diemberger. Jaeger and Afanassieff were the first to climb and then ski down one of the 14 mountains on Earth higher than . From 27 July to 27 September 1979, he spent 60 days alone at altitude on Huascarán to study the effects of "super-acclimatisation" on himself. He published an account of his experience in "Carnets de Solitude" the same year.
On 27 April 1980, Jaeger was seen for the last time at altitude during an attempted ascent of Lhotse Shar in Nepal, and is presumed dead.