Yes, it is possible to ski down Mount Fuji. The mountain has a few slopes suitable for skiing and snowboarding during the winter months when there is enough snow cover. The most popular route for skiing or snowboarding on Mount Fuji begins from the summit of the mountain at an elevation of 3,776 meters. Skiing or snowboarding down this route takes approximately one hour and can be quite challenging due to its steepness and large amount of loose rocks and other debris that could be hazardous. Skiers should also take into account that Mount Fuji is prone to unpredictable weather conditions which could further increase the difficulty of navigating its slopes safely.