The Alpine Journal is the oldest mountaineering periodical in the world, created as a record of mountain exploration and culture, and its 153rd publication celebrates some of the outstanding ascents of 2015. Two of Britain's best younger alpinists, Will Sim and Ben Silvestre, describe hard first ascents in Alaska, while a third, Andy Houseman, has an account of the first ascent of Link Sar West in the Karakoram, beautifully illustrated by Jon Griffith. The celebrated Italian mountaineer Simone Moro details his first winter ascent of Nanga Parbat, after scores of attempts by himself and many others. There is also Mick Fowler's account of the first ascent of Gave Ding in far western Nepal, exploratory mountaineering of the highest order. The Journal also records exploration in the Andes, Pakistan, Zanskar, Tajikistan and two expeditions to Greenland. The Journal also has some exceptional writing on more cultural topics. Abbie Garrington looks at George Mallory's correspondence with his admirer Marjorie Holmes, while we also publish for the first time a long and revealing letter Jack Longland wrote from Everest in 1933. Jim Milledge describes the career of Stanhope Speer, pioneer in mountain medicine and noted spiritualist, while John Porter recalls his months spent working for Ken Wilson, climbing publisher and force of nature.