Timeline of Mount Everest expeditions Timeline of Mount Everest expeditions Mount Everest is the world's highest mountain, with a peak at 8,848 metres (29,029 ft) above sea level. It is situated in the Himalayan range. The first British expedition—organized and financed by the newly formed Mount Everest Committee—came under the leadership of Colonel Charles Howard-Bury, with Harold Raeburn as mountaineering leader, and included George Mallory, Guy Bullock, and Edward Oliver Wheeler. It was primarily for mapping and reconnaissance to discover whether a route to the summit could be found from the north side. As the health of Raeburn broke down, Mallory assumed responsibility for most
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