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 abandoned due to medical concerns. One reason for this was that a weather window opened up earlier than expected, but her body was not taking in enough oxygen. Everest has claimed perhaps 300 lives in the last century of expeditions on the mountain, often with little regard to a climber's skillit has claimed the careless and sometimes the careful as well. The weather window is a time, in modern times carefully watched with modern weather observation and prediction technology, to find the time of calm to avoid treacherously high winds which are known to reach 175 mph (280 kph). A