Central Karakoram National Park the world and the largest protected area in Pakistan. It covers about in the Central Karakoram mountain range. It varies in altitude from above sea level to the summit of chogori K2, the world's second highest mountain at . There are three other mountains over , Gasherbrum I (), Gasherbrum II () and phalchanri Broad Peak (), and sixty mountains over . The park also includes the Baltoro, Panmah, Biafo and Hispar glaciers and their tributary glaciers and is considered to be one of the most beautiful national parks in Pakistan. In 2013 it was stated that the exact boundaries
K2 unable to keep pace. The mountain was first surveyed by a European survey team in 1856. Team member Thomas Montgomerie designated the mountain "K2" for being the second peak of the Karakoram range. The other peaks were originally named K1, K3, K4, and K5, but were eventually renamed Masherbrum, Gasherbrum IV, Gasherbrum II, and Gasherbrum I, respectively. In 1892, Martin Conway led a British expedition that reached "Concordia" on the Baltoro Glacier. The first serious attempt to climb K2 was undertaken in 1902 by Oscar Eckenstein, Aleister Crowley, Jules Jacot-Guillarmod, Heinrich Pfannl, Victor Wessely, and Guy Knowles via the Northeast