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 Camp II at in 12 minutes (some sources say 11 minutes). Boivin would not repeat this feat, as he was killed two years later in 1990, base-jumping off Venezuela's Angel Falls. In 1991 four men in two balloons achieved the first hot-air balloon flight over Mount Everest. In one balloon was Andy Elson and Eric Jones (cameraman), and in the other balloon Chris Dewhirst and Leo Dickinson (cameraman). Leo went on to write a book about the adventure called "Ballooning Over Everest". The hot-air balloons were modified to function at up to 40,000 feet altitude. Reinhold Messner called one of