Vanessa O’Brien is a British-American mountain climber, explorer, public speaker and former business executive. As of April 2013 Vanessa became the fastest women to complete the Explorer's Grand Slam in 11 months and the 7th to do so. In addition, she became the fastest women to climb the 7 summits (in 10 months) including Carstensz Pyramid - one of 54 to do so.
