Kusatsu Onsen is a hot spring located in Gunma Prefecture. The amount of hot springs that spring naturally is the largest in Japan, and it is one of the representative hot springs in Japan.
“Yumomi” not only lowers the temperature of the hot water but also has the effect of softening the water.
“Yubatake” is also used to collect “Yunohana”, and “Yunohana” is used as a bath salt.
Many tourists visit the fantastic nighttime hot springs created by the steam and illuminations from the source every day.