 They reached the summit, climbing without supplementary oxygen, via a new route on the North Face (North Face to Norton Couloir).In 1990, Macartney-Snape became the first person to walk and climb from sea level to the top of Mount Everest.Macartney-Snape is also the co-founder of the "Sea to Summit" range of outdoor and adventure gear and accessories, a guide for adventure travel company World Expeditions and a founding director and patron of the World Transformation Movement.