Gilgit-Baltistan province to the west, a small portion of the Wakhan Corridor of Afghanistan to the north, China's Xinjiang Uyghur Autonomous Region to the northeast, the Indian-administered Jammu and Kashmir to the southeast, and the Pakistani-administered state of Azad Jammu and Kashmir to the south. Gilgit-Baltistan is home to all five of Pakistan's "eight-thousanders" and to more than fifty peaks above . Gilgit and Skardu are the two main hubs for expeditions to those mountains. The region is home to some of the world's highest mountain ranges. The main ranges are the Karakoram and the western Himalayas. The Pamir Mountains are
K2 incorrectly showing that K2 was taller than Mount Everest, and therefore the tallest mountain in the world. A corrected measurement was made in 1987, but by that point the claim that K2 was the tallest mountain in the world had already made it into many news reports and reference works. The mountains of K2 and Broad Peak, and the area westward to the lower reaches of Sarpo Laggo glacier consist of metamorphic rocks, known as the "K2 Gneiss" and part of the Karakoram Metamorphic Complex. The K2 Gneiss consists of a mixture of orthogneiss and biotite-rich paragneiss. On the south