There is more detail about the Japanese woman who died:
Oldest woman to reach Mt. Everest's peak dies
A 63-year-old Japanese doctor who had just become the oldest woman to climb Mt. Everest died Thursday after falling unconscious 350 meters into her descent from the summit, the Tokyo-based firm that organized her expedition said.
According to Adventures Guide Co., Shoko Ota, a physician from Fukuyama, Hiroshima Prefecture, was roped to her fellow climbers when she fell unconscious at an altitude of about 350 meters below the 8,850-meter summit.
She stopped breathing and died despite efforts by tour leader Kenji Kondo, 41, and others to resuscitate her, the firm said.
Ota became the sixth Japanese woman to scale the world's highest peak and the oldest woman to do so alongside mountaineer Tamae Watanabe, who also was 63 years old when she reached the summit in May 2002.
The expedition, which was open to the public, set out from Narita Airport on April 14, and Ota and three male climbers started their ascent April 24, the firm said.
According to a diary on the firm's Web site in which the expedition's progress was charted, Ota and two other members of the party reached the summit at 10:47 a.m. local time.
Buffeted by driving wind and snow and worried about the difficult descent, the group immediately started to climb back down the mountain, according to the online diary.
Ota started mountaineering at the age of 40. In January 2001, she scaled 5,895-meter Mt. Kilimanjaro in Kenya, Africa's highest peak, and in September 2002, she reached the peak of Mt. Cho Oyu in the Himalayas, which at 8,201 meters is the world's sixth- highest mountain. In January, Ota completed a successful ascent to the 4,897-meter summit of Mt. Vinson, the highest mountain in Antarctica.
"Mountaineers from across the world flock to Mt. Everest at this time of year because this is when the climate is most settled, just before the rainy season," said Takashi Ozaki, 51, from Kameyama, Mie Prefecture, who in May 1980 made the first full ascent of the north face of Mt. Everest.
"However, sudden snowstorms are not uncommon," he added.
Mountaineering tours aimed at the general public surged in popularity in North America and Europe during the 1990s.
A number of companies also started running climbing tours in the Himalayas, which is known as the "roof of the world".
At base camp, tour organizers give instruction on mountaineering, work out climbing schedules and take responsibility for preparing equipment, food and oxygen flasks.
Note that MountEverest
reports that she was not the oldest woman to have climbed Everest:
Shoko Ota was 63 and 80 days the second oldest to summit Everest after Tamae WATANABE who is 63 years and 176 days