Climbing some of the world’s tallest mountains, you enter the “death zone” when you are 8,000 metres from sea level—where oxygen is 34% the concentration it is on the ground below. Climbing here is one of the most dangerous forms of tourism there is. For mountaineers, the most tantalising goal is to climb the world’s 14 highest peaks, all of which stretch into the death zone.
Click here for original story, Everest: I interviewed people risking their lives in the ‘death zone’ during one of the deadliest seasons yet
Source: Phys.org