In July 2006, Esther Colwill (Mead, 1992) completed her challenge of climbing the highest summit in every continent by ascending Mount McKinley, the highest peak in North America. Esther climbed the first mountain in Africa with her parents, aged 13. She has since climbed Kilimanjaro (Africa), Aconcagua (South America), Vinson Massif (Antarctica), Elbrus (Europe), Kosciuszko (Australia), Everest (Asia) and finally McKinley (North America). Esther is one of only about 100 people and 20 women in the world to conquer all seven mountains.