Reinhold Messner and Peter Habeler climb Mount Everest without oxygen supply.
Prior to the Italian and Austrian mountaineers’ ascent, it was thought to be impossible to conquer the world’s highest mountain without supplemental oxygen.
Reinhold Messner and Peter Habeler climb Mount Everest without oxygen supply.
Prior to the Italian and Austrian mountaineers’ ascent, it was thought to be impossible to conquer the world’s highest mountain without supplemental oxygen.