Niseko, Hokkaido
Niseko is the most famous ski resort in Japan, known for having tons of light powder snow, spectacular backcountry and a large number of foreigners - especially Australians - who in recent years have been responsible for popularizing the resort area with the skiing/snowboarding community outside of Japan. As a result, Niseko's resorts are very accessible and welcoming to foreign visitors, which they keep busy with plenty of vast, long ski runs, endless powder, and a growing number of after-ski activities.
In addition to kilometers of ski trails, many of Niseko's resorts offer winter adventure seekers the option to explore off trail skiing, a relatively uncommon attraction at most other ski resorts in Japan. The backcountry can be accessed through special gates around the resorts or experienced on guided tours and helicopter tours. The latter is also possible on nearby Mount Yotei, a nearly perfect volcanic cone, which can be seen from Niseko.
Niseko's ski resorts are all located on Mount Niseko-Annupuri. Three major resorts, Grand Hirafu, Niseko Village and Annupuri, cover most of the southeastern half of the mountain while a few smaller resorts dot their perimeter. The big three are joined together with each other at the top of the mountain, and it is possible to ski between them, while shuttle buses connect them at their bases. A special combination ticket, the Niseko All Mountain Pass, gives access to all three resorts.
From:
http://www.japan-guide.com/e/e6720.html