Oh Eun-Sun a South Korean mountaineer, on April 27, 2010, became the first woman and the 21st person to climb all fourteen eight-thousanders. However, Oh's feat has been disputed by her closest rival, Edurne Pasaban, and others who questioned Oh's summit of Kangchenjunga. The accomplishment has been accepted by 8000ers.com, the Nepal Mountaineering Association, and ExplorersWeb. Elizabeth Hawley, well-known chronicler of Himalayan expeditions, said it would be counted, but would be marked as disputed pending further investigation.

Read more: First Woman to Climb All Fourteen Eight-Thousanders