Okito Onneyu Shikaribetsu Lake Frozen Blue

In the Tokachi region, Shikaribetsu Lake completely freezes in winter, revealing a natural phenomenon where the lake surface shines with transparent blue. When the ice thickness becomes uniform, "ice blue" - which appears deep blue as sunlight passes through the ice - can only be encountered on days when conditions are just right, an elusive spectacular view. On guided tours walking across the frozen lake, you can experience the world of blue ice spreading beneath your feet.