Mount Kusatsu-Shirane
Mount Kusatsu-Shirane (or Mount Shirane) is an active stratovolcano in Kusatsu, Gunma Prefecture. This 2,160-meter tall volcano has had notable eruptions in 1983 and 2018. There are three crater lakes at the summit of Mount Kusatsu-Shirane. The largest is Yu-gama crater lake; with its turquoise blue waters and rafts of yellow sulfur, it makes for a striking and mysterious vista to all who visit. It is also the most acidic lake in Japan.
Notice
As of January 23, 2018, the summit of the volcano has been off-limits to the public. This closure includes the three crater lakes.
The volcano and its crater lakes, located just outside of Kusatsu Onsen Town, are a popular tourist destination, especially in autumn when the leaves are at their most vibrant. Hiking trails circle the crater lakes and make the hiking season, from mid-April to early November, a wonderful outdoor excursion. The most popular path is the from the Shirane Resthouse to Yu-gama. Thanks to the paved trail, the walk takes only ten minutes and is easy for people of all ages and skill.
Access
A 30-minute bus ride from the Kusatsu Onsen town center Kusatsu Bus Terminal to Shirane Resthouse.
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