The winter road closures, which seem to be related to customers to Shima Onsen, are the following two sectors.
Route 292, From mid-November to late April
It is a road, which passes from Shibu-Yudanaka Onsen in Nagano famous with snow monkeys to Kusatsu Onsen in Gunma, through Shiga Kogen.
Route 120, From late December to late April
It is a road, which passes from Nikko in Tochigi with Nikko to Katashina in Gunma, through Konsei Toge.
If you’re planning to drive to snowy places during winter, obtain winter road closure information in advance and act with spare time, such as by inquiring to hotels and ryokan you are planning to stay.