Guide
Onneto is a breathtakingly beautiful lake located within the Akan-Mashu National Park in eastern Hokkaido. Its most striking feature is the dramatic transformation of the water's color, which changes based on the season, weather, and the angle of sunlight. The lake can shift from a brilliant, translucent emerald green to a deep, mysterious sapphire blue, a phenomenon that never fails to captivate visitors. Surrounded by dense, ancient forests, the lake exudes a sense of profound serenity and mystery, truly living up to its reputation as a 'mystical lake.'
Onneto (which means 'quiet lake' in the Ainu language) has long been revered as a sacred site by the Ainu people. It exists as a vital part of the local spiritual landscape, alongside the surrounding volcanic peaks such as Mt. Meakan and Akan Fuji. As a protected natural park, the area is strictly managed to preserve its pristine, untouched scenery. Visitors can experience not just the physical beauty of the landscape, but also the deep historical and spiritual connection to the land and its indigenous heritage.
The greatest draw of Onneto is the mesmerizing