Mario Vielmo will be among them. Vielmo is a professional mountain guide from Italy who has devoted over a decade to climbing ...

In the spring, we were joined by a climbing party who attempted (unsuccessfully) to reach the summit of Makalu (8481 m) without supplementary oxygen. A bicycle ergometer (which measures the amount ...

Kaltenbrunner emphasized it was important for her to climb the mountains without oxygen to test her own capabilities. In this file picture taken on May 28, 2009 Austrian alpinist Gerlinde ...

Up at The O2 is an award-winning attraction that has welcomed over a million climbers. A range of climb types are available to book from £37 per person. These include Daytime, Twilight, Sunset, and ...

Kaltenbrunner emphasized it was important for her to climb the mountains without oxygen to test her own capabilities. “If you use bottled oxygen at 8,000 meters, you reduce the mountain to a ...