Pass is a 4,693-meter-high mountain pass in the Karakoram Mountains. It is in a strategic position on the northern border of Pakistan and on the southwest border of China and is also located in Hunza. Eco-friendly hiking treks like Ondra Poygah Gulmit and Leopard Trek Shiskhat are also known for their views. The valley is popularly believed to be the inspiration for the mythical valley of Shangri-La in James Hilton's 1933 novel, Lost Horizon. One can witness the 57 km long Batura Glacier, the fifth-longest glacier in the world outside the polar region, surrounded by Shispare, Batura, and Kumpirdior peaks. Upon reaching Sost, one can continue the journey up to Khunzhrav or turn west to the Chipursan (also Chapursan) Valley. In Yarzerech (also Yarzirich), one can look at the Kundahill peak (6,000 m), or trek along the Rishepzhurav to the Kundahill. Beyond Yarzerech, one can travel further to Lupghar, Raminj, Reshit, Yishkuk up to Bobo Ghundi (Oston), the shrine of Baba-e-Ghund, a saint from Afghanistan near the border between Pakistan and the Wakhan region of Afghanistan. 2018 rescue mission On 1 July 2018, Pakistan Army pilots, in a daring mission, rescued 3 foreign mountaineers stuck in snow avalanche at above the height of on Ultar Sar Peak near Hunza. The perilous weather conditions had made it difficult for the Army helicopter to go forth with a rescue operation on the high Ultar Sar. Nonetheless, they completed it. Bruce Normand and Timothy Miller from the UK were successfully rescued alive while their companion Christian Huber from Austria had succumbed to avalanche. Britain's High Commissioner Thomas Drew in Pakistan termed the mission "remarkable and dangerous". People The local languages spoken include Burushaski, Wakhi and Shina. The literacy rate of the Hunza valley is more than 95%. The historical area of Hunza and present northern Pakistan has had, over the centuries, mass migrations, conflicts and resettling of tribes and ethnicities, of which the Shina people are the most prominent in regional history. People of the region have recounted their historical traditions down the generations. The Hunza Valley is also home to some Wakhi, who migrated there from northeastern Afghanistan beginning in the nineteenth century onwards. The longevity of Hunza people has been noted by some, but others refute this as a longevity myth promoted by the lack of birth records. There is no evidence that Hunza life expectancy is significantly above the average