Mount Shirane Reopens Yugama Crater Viewing Area After Eight Years
After approximately eight years of restrictions, visitors can once again enjoy views of Yugama Crater Lake at Mount Kusatsu-Shirane in Gunma Prefecture. The designated viewing area reopened on October 13, 2026, offering tourists an opportunity to see the volcano’s striking emerald-green crater lake.
The reopening follows the lowering of the volcanic alert level from Level 2 to Level 1 in May 2026. Authorities have introduced safety measures and designated access areas to allow visitors to experience this popular natural attraction while maintaining volcanic safety precautions.
The current reopening period is scheduled to continue until November 8, 2026, subject to changes in volcanic conditions and official instructions.
Important Information for Visitors Location: Mount Kusatsu-Shirane, Kusatsu, Gunma Prefecture, Japan Attraction: Yugama Crater Lake Reopening date: October 13, 2026 Scheduled opening period: Until November 8, 2026
Safety: Visitors must remain within designated permitted areas. Entry into restricted zones near the crater is prohibited.
Mount Shirane is known for Yugama, a striking crater lake famous for its vivid turquoise-green colour. The reopening is welcome news for nature lovers, photographers and travellers exploring the Kusatsu Onsen area.
Visitors are advised to check the latest announcements from Kusatsu Town and the Japan Meteorological Agency before travelling, as access conditions may change depending on volcanic activity and weather.
Official information: Kusatsu Town: https://www.town.kusatsu.gunma.jp/s001/110/060/20261008/index.html Japan Meteorological Agency: https://www.jma.go.jp/ Source: Kusatsu Town and Japan Meteorological Agency announcements.
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