Reinhold Messner is an Italian mountaineer famous for being the first to climb all 14 mountains over 8,000 meters without oxygen. As one of the greatest climbers ever, he has climbed many peaks without oxygen support, including Nanga Parbat known for its massive vertical wall. In one of his most famous adventures, Messner achieved the incredible feat of climbing Mount Everest alone and without oxygen after first summiting it with a friend using the same technique.

1. Reinhold Messner
Reinhold Messner is an Italian mountaineer. He is famous because he was the first person to
climb all the 14 mountains over 8000 metres without oxygen. Many people think he has been
the best climber ever.
In his career he has climbed many mountains without oxygen but he is a writer and a lecturer,
too. Some of his most famous climbs are when he climbed the Nanga Parbat, which has got
the world's largest vertical wall. But he has climbed some other mountains like Mount
McKinley, Makalu or K2.
In one of his famous adventures, he climbed alone Mount Everest without oxygen, a great
feat. First of all, he climbed Mount Everest with a friend without oxygen, but after some
years, he decided to climb it alone. And he achieved that feat too.
By: Cristina Teresa