Mount Qomolangma(Chinese:珠穆朗玛峰；pinyin:zhūmùlángmǎfēng), known to the West as Mt. Everest, stands a the south of Tingri in southern Tibet, on the borderof the central Himalayas, between China and Nepal. It is the tallest mountain in the world, and thought to be some 60 million years old. This majestic peak, capped by enternal snow, has long attracted mountaineers, scientists, and ordinary tourists.
Qomolangma, meaning "the third Goddess of mountain" in Tibetan, is the highest mountain on earth with an altitude of 8,844.43 meters. This high elevation gives Mount Everest the distinction of being the mountain with the highest altitude. It is called the "third," because there are four other peaks standing around it and it is the third in the line.

The Tibetan approach to Qomolangma provides far better vistas of the world's highest peak than those on the Nepal side. The optimum weather on Qomolangma is from May to June, and from September to October, two golden periods for mountaineers. Each year a great number of brave mountaineers come from all over the world to tour and climb Qomolangma, hoping to fulfill a life-long wish by climbing and looking out from the world's highest peak.
Some 27,000 square kilometers around the mountain's Tibetan face have been designated as the Qomolangma Nature Preserve, aiming to protect the environment and the cultural traditions of the local people.

The highest mountain in the world attracts climbers of all levels, from well experienced mountaineers to novice climbers willing to pay substantial sums to professional mountain guides to complete a successful climb.
Most expeditions use oxygen masks and tanks above 8,000 m (26,246 ft). Everest can be climbed without supplementary oxygen but this increases the risk to the climber. Humans do not think clearly with low oxygen, and the combination of severe weather, low temperatures, and steep slopes often require quick, accurate decisions.

Climb Routes
Mt. Everest has two main climbing routes, the southeast ridge from Nepal and the northeast ridge from Tibet, as well as many other less frequently climbed routes. Of the two main routes, the southeast ridge is technically easier and is the more frequently-used route. It was the route used by Edmund Hillary and Tenzing Norgay in 1953 and the first recognised of fifteen routes to the top by 1996. This was, however, a route decision dictated more by politics than by design as the Chinese border was closed to the western world in 1950s after the Communist China took over the control Tibet from the Republic of China.

View from space showing South Col route and North Col/Ridge route
Most attempts are made during May before the summer monsoon season. As the monsoon season approaches, a change in the jet stream at this time pushes it northward, thereby reducing the average wind speeds high on the mountain. While attempts are sometimes made after the monsoons in September and October, when the jet stream is again temporarily pushed northward, the additional snow deposited by the monsoons and the less stable weather patterns (tail end of the monsoon) makes climbing more difficult.