The expeditions performed pioneering work for later alpinists in the Karakoram. One expedition that climbed some lower peaks and explored the routes that would be used by later climbers to clamp the eight-thousand-one in the area. With the help of Afraz Ghul Khan and Muhammad Akram of the Survey of India, the extremely inhospitable Karakoram was accurately mapped. Visser studied the location, shape and flow of the glaciers while his wife documented the local flora.