Reinhold Messner climbed Mount Everest, without oxygen….

Reinhold Messner climbed Mount Everest, without oxygen. Climbed Nanga Parbat(8,126 metres) 3 times, the first time he lost his brother and 7 toes in the process. Then climbed it again to become the first person to solo climb it. And climbed it again to retrieve his brother’s remains.