In some instances, Siberian Huskies can exhibit what is called 'snow nose' or 'winter nose.' This condition is called hypopigmentation in animals. 'Snow nose' is acceptable in the show ring. Although Balto is considered the more famous, being the dog that delivered the serum to Nome after running the final 53-mile leg, it was Togo who made the longest run of the relay, guiding his musher Leonhard Seppala on a 91-mile journey that included crossing the deadly Norton Sound to Golovin.In 1960, the US Army undertook a project to construct an under the ice facility for defense and space research, Camp Century, part of Project Iceworm involved a 150+ crew who also brought with them an unofficial mascot, a Siberian Husky named Mukluk.Huskies were extensively used as sled dogs by the British Antarctic Survey in Antarctica between 1945 and 1994. A bronze monument to all of BAS's dog teams sits outside its Cambridge headquarters.