Lake Mashu

• Hokkaido
• Sightseeing
• Accommodation
• Nature
• Spring
• Summer
• Autumn
• Winter

The mystical Lake Mashu is a world-renowned caldera lake within Akan-Mashu National Park. Once a record-holder for the world's clearest water, its deep indigo surface, often wrapped in ethereal mist, has earned it the nickname 'Misty Lake Mashu' — and local legend holds that those who see it too clearly from the viewing platform will find bad luck in love. The lake's appearance shifts with the seasons and time of day, and visitors may witness the mystical moment when its clear blue waters are suddenly veiled in white mist. Surrounding peaks such as Mt. Mashu and Kamuinupuri preserve a vivid stretch of untouched wilderness.