Toyokoro Town・Jewelry Ice

Jewelry Ice is a winter-only natural phenomenon that can be seen at Otsu Beach in Toyokoro Town. Ice from the frozen Tokachi River flows out into the Pacific Ocean, where it is polished by the waves to become transparent like jewels before washing ashore. When illuminated by the morning or evening sun, the ice sparkles in seven colors—truly nature's own jewelry. The best viewing period is from mid-January to late February, with early morning photography recommended.