Mount Everest Himalayas. In 1953, George Lowe (part of the expedition of Tenzing and Hillary) said that he saw bar-headed geese flying over Everest's summit. Yaks are often used to haul gear for Mount Everest climbs. They can haul 100 kg (220 pounds), have thick fur and large lungs. One common piece of advice for those in the Everest region is to be on the higher ground when around yaks and other animals, as they can knock people off the mountain if standing on the downhill edge of a trail. Other animals in the region include the Himalayan tahr which is sometimes
Mount Everest known as "rainbow valley", filled with dead bodies still wearing brightly coloured winter gear. Down to about 8000 metres is an area commonly called the "death zone", due to the high danger and low oxygen because of the low pressure. Below the summit the mountain slopes downward to the three main sides, or faces, of Mount Everest: the North Face, the South-West Face, and the East/Kangshung Face. At the higher regions of Mount Everest, climbers seeking the summit typically spend substantial time within the death zone (altitudes higher than ), and face significant challenges to survival. Temperatures can dip to