Edmund Hillary and Tenzing Norgay were the first to reach the summit of Mount Everest, they did so on the 29th May 1953
Climbers have to let their body get use to the higher altitude in stages, this can take up to 2 months.
To actually climb a mountain takes from 2 to 7 days (round trip) but for mountains such as Mount Everest there is more time spent in the base camp and resupplying at advance camps on the way up. Some mountains, such as Everest and K2, have restrictions on the numbers of climbers and permits are required.
They would need to cancel there climb on Mount Everest and try again another year. If they have already paid a deposit to a expedition company it would be up to them to decide if to keep there deposit until another time.
1. Experienced limbers no longer use oxygen tanks as a matter of course. 2. It is possible to manage without oxygen, even on top of Everest, if you aren't doing anything but standing around. It is very hard to exert yourself, however, without an adequate supply of oxygen. 3. The higher you get, the "thinner" the air and the less oxygen. Taking in oxygen is the basic purpose of breathing in the first place. 4, There are now devices and techniques which can help climbers breathe without the need for "bottled" oxygen. For example, anyone planning to climb Everest these days is likely to spend several weeks at altitude beforehand, to give their body time to adapt (like producing extra red blood cells which can then absorb oxygen).
Edmund Hillary and Tenzing Norgay were the first to reach the summit of Mount Everest on the 29th May 1953.
The number of people climbing Mount Everest in one day varies, but on busy days during the climbing season, it can range from 50 to over 100 climbers attempting to summit. This high number of climbers has raised concerns about overcrowding and safety on the mountain.
After the Climb - 2007 The Everest Effect 1-2 was released on: USA: 4 December 2007
To actually climb a mountain takes from 2 to 7 days (round trip) but for mountains such as Mount Everest there is more time spent in the base camp and resupplying at advance camps on the way up. Some mountains, such as Everest and K2, have restrictions on the numbers of climbers and permits are required.
Mount Everest is difficult to climb because: 1: The altitude 2: The weather 3: Crevasses
Mount Everest is important to the Sherpas for 2 main reasons: 1: Because of the height of the mountain it is closer to there gods. 2: Climbers from all over the world bring much needed money into the region when they come to climb Mount Everest.
There are many articles about the mystery of Mallory and Irvine's last climb on Mount Everest. Read the 2 articles at the links given.
More of a technical climb also the location is hard to access