Gilgit-Baltistan Mount Everest and also the youngest Muslim woman to climb Everest, having done so at the age of 21 while Hassan Sadpara from Skardu valley is the first Pakistani to have climbed six eight-thousanders including the world's highest peak Everest (8848m) besides K2 (8611m), Gasherbrum I (8080m), Gasherbrum II (8034m), Nanga Parbat (8126 m), Broad Peak (8051m). Gilgit-Baltistan Gilgit-Baltistan (), formerly known as the Northern Areas, is the northernmost administrative territory in Pakistan. It borders Azad Kashmir to the south, the province of Khyber Pakhtunkhwa to the west, the Wakhan Corridor of Afghanistan to the north, the Xinjiang region of
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