Hakkaisanroku is a small ski hill to the north of the more well-known and much larger Muikamachi Hakkaisan resort.
It's one of those more 'local' places that are mostly used by locals including schools. When I went (just the once), it was actually quite busy with one of the local Uonuma schools obviously having a mass ski lesson.
Not much else to say about it really. Just a small, local hill. Probably good for families and children, beginners