Hall grew up in New Zealand where he climbed extensively in the Southern Alps. In 1989, Rob Hall met Gary Ball, who became his climbing partner and close friend. As with most other mountain climbers, Hall and Gary Ball sought corporate sponsorships to fund their expeditions. The partners decided to climb the Seven Summits, but upped the ante by ascending to the summits of all seven in seven months. They started with Everest in May, and climbed the last mountain, Antarctica's Vinson Massif, on 12 December 1990, hours before the deadline. After this success they realised that to retain their sponsorships, each successive climb would have to be ever riskier and more spectacular, increasing the chances of an accident. Hall and Ball therefore decided to quit professional climbing and form a high-altitude guiding business.