Twenty people have grouped together to brave the dangerous "death zone" conditions of Mount Everest to clear the rubbish left behind by climbers.

More than 4, 000 adventurers have braved the mountain since 1953. Many abandon the climb and leaving behind used gear and rubbish due to exhaustion and lack of oxygen, making the mountain one of the highest dumps in the world.

Namgyal Sherpa, leader of the Extreme Everest Expedition 2010, took the group above the 8,000-meter mark to collect the rubbish. Sherpa says that collecting the rubbish is a risky task and cannot just be carried out by anyone.

The group is not only concerned about the impact of garbage on Mt. Everest, but also with the threat of global warming. Once they used to climb over snow and now they just climbi over rocks.

After the 40-day clean up, the group was expected to bring back around 2,000 kg of waste.