WebK2, at 8,611 metres (28,251 ft) above sea level, is the second-highest mountain on Earth, after Mount Everest at 8,849 metres (29,032 ft). [3] It lies in the Karakoram range, partially in the Gilgit-Baltistan region of Pakistan -administered Kashmir and partially in the China -administered Trans-Karakoram Tract in the Taxkorgan Tajik Autonomous ...