Desmaison had climbed more than 1,000 mountains since the 1950s.[1] He made the first ascent of 114 previously unclimbed mountains throughout the Andes, Alps and Himalayas[1] in his 40-year climbing career.[2] He is also credited with creating several new winter routes in the Alps.[1]
René Desmaison died on September 28, 2007, at La Timone Hospital in Marseille, France. He was 77 years old.[1]