@Visit Japan: Lake Toya is a volcanic caldera lake in Shikotsu-Toya National Park. Nearby Mt. …

Lake Toya is a volcanic caldera lake in Shikotsu-Toya National Park. Nearby Mt. Usu is one of the most active volcanoes in Japan, its most recent eruption in 2000. 📷: @grahamwerner #VisitJapanAU #JapanRevealed