1995: Alison Hargreaves, una madre británica de 33 años, se convierte en la primera mujer en ascender el Everest sin oxígeno ni ayuda de sherpas

Alison Hargreaves, a 33-year-old British mother, becomes the first woman to ascend Everest without oxygen or the help of sherpas.

Alison Jane Hargreaves was a British mountaineer. Her accomplishments included scaling Mount Everest alone, without supplementary oxygen or support from a Sherpa team, in 1995. She soloed all the great north faces of the Alps in a single season—a first for any climber. This feat included climbing the difficult north face of the Eiger in the Alps. Hargreaves also climbed 6,812-metre (22,349 ft) Ama Dablam in Nepal.