Watch Unconquerable Summit for Free: How to Stream the Movie Online at 123Movies. . This documentary tells via the testimonies of people who knew him (like Simone Moro, his companion during his last ascent), the life, the mountaineering exploits and the very tolerant character of Anatoli Boukreev. This famous mountaineer has made more than twenty-one ascents on mountains of 8,000 m altitude, without using supplemental oxygen, and has reached the summit of Everest four times. In 1996 he saved the lives of many climbers in a group led by Scott Fischer during their attempt on Everest. The documentary is based on footage shot during his tragic last ascent of Annapurna in Nepal in 1997.