Bernard Voyer reached the summit of the highest mountain on Earth, Mount Everest with Dorjee Fulele Sherpa, on May 5, 1999. They arrived at 12:10 p.m. from Nepal, spent 40 minutes at the summit.
Anyone wishing to climb Everest must have a permit. In 1991, the cost of the permit was C$3,500. Today, it is C$10,000.
Everest base camp altitude: 5 400m. 4 other high-altitude camps are required:
- Camp I, at 6 100m
- Camp II, at 6 500m
- Camp III, at 7 400m
- Camp IV, at 8 000m
The amount of oxygen in the air drops drastically with altitude:
- at 3 000m, 69%
- at 6 000m, 47%
- at 8 000m, 35%
- at the summit, 30%
Climbing pace: climbing just 400 m/day above 3 000m:
- at 3 000m, take one day‘s rest
- at 4 000m, 2 days
- at 5 000m, 3 days
- at 6 000m, 4 days
- above 7 500m, acclimatization is impossible.