the Nepal - China (Tibet) border. Its massif includes neighboring peaks Lhotse (8516m), Nuptse (7855m), and Changtse (7580m). In 1856, the Great Trigonometric Survey of British India established the first published height of Everest, then known as Peak XV , at 29,002 ft (8,840 m). In 1865, Everest was given its official English name