

- Mount Everest, the highest mountain in the world, is on the Tibet and Nepal border in Asia.Photograph © Alan Kearney/Getty Images

- The long Northeast Ridge of Mount Everest was attempted by several British expeditions in the 1920s and 1930s.Photograph courtesy ChinaReview.com

- Mount Everest, straddling the Nepal and Tibet border, is the highest of the Seven Summits and the world's highest mountain.Photograph © Getty Images