abstract:Louis Lachenal (17 July 1921 – 25 November 1955), a French climber born in Annecy, Haute-Savoie, was one of the first two mountaineers to climb a summit of more than 8,000 meters. On 3 June 1950, along with Maurice Herzog, he reached the summit of Annapurna I in Nepal at a height of 8,091 m (26,545 ft).