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K2 is the world’s second-highest mountain, standing at 8,611 meters (28,251 feet) in the Karakoram Range of Gilgit-Baltistan, Pakistan. Also known as Mount Godwin-Austen and Chogori, it was first climbed on July 31, 1954 by Italian mountaineers Lino Lacedelli and Achille Compagnoli via the Abruzzi Spur.