Wakhan Corridor east. To the north is Tajikistan's Gorno-Badakhshan Autonomous region. To the south, the corridor is bounded by the high mountains of the Hindu Kush and Karakoram. Along the southern flank of the corridor, there are two mountain passes which connect the corridor to its neighbours. The Broghol pass offers access to the Khyber Pakhtunkhwa region of Pakistan, while the Irshad Pass connects the corridor to Gilgit Baltistan in Azad Kashmir. The Dilisang Pass, which also connects to Gilgit-Baltistan, is disused. The easternmost pass, as indicated above, is the Wakhjir Pass, which connects to China and is the only border connection
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