Bertrand Delapierre is a French mountaineer and documentary filmmaker. He started with sliding films before taking an interest in rock climbing. He was the climbing companion of the extreme snowboarder Marco Siffredi whom he accompanied in the Alps and the Himalayas. He later directed the documentary "Marco, L'Étoile Filante" on life and death in the Himalayas of Marco Siffredi. Prolific, he subsequently produced numerous documentaries, especially of climbing ascents. In particular, on ice climbing in 2003, with François Damilano, Guy Lacelle and five other climbers, "Ice Up". On free climbing, he directed many documentaries including "Ali Baba & Serial Climbers", with Mathieu Bouyoud who connects the route and Daniel Du Lac in insurance, "La Voie Du Milieu" always with Mathieu Bouyoud and Daniel Du Lac for Petzl. A report on Arnaud Petit who climbs Black Bean 8b on a jammer. In 2006, "Les Amants Des Drus" a film showing the history of the ascents of the west face of the Drus. In 2016 he immersed himself in the history of the mythical summit with "L'Aiguille Verte"... In 2019, he directed the documentary "Eric Escoffier - La Fureur De Vivre"...