Goraikousou is a hut in the Mt.Fuji hight 2560m. It takes usually Fujinomiya entry of route about 90minutes. And takes 3 hours to the summit of Mt.Fuji.
Yamaguchi sansou is a hut at an altitude of 3010m at Mt.Fuji. It takes about 2 hours from starting point of Fujinomiya trail,and takes about 2 hours to the summit of Mt.Fuji.