Lake Onneto
The Shifting Colors of Hokkaido’s Ancient Jewel
One of Hokkaido’s three most mystical lakes, where the water reveals ever-changing shades of color throughout the year.
Lake Onneto is a breathtaking natural wonder located at the western edge of Akan-Mashu National Park. This lake, with a circumference of 2.5 km and a depth of about 10 meters, was formed when lava from the eruption of Mt. Meakan dammed the Rawan River long ago. Its name comes from the Ainu word for “old pond,” and it rests quietly within a pristine primeval forest. The lake’s surface transforms with the seasons, weather, and sunlight, shifting between clear blue, emerald green, and deep blue. Each visit reveals a different expression of this natural artwork.
From the observation deck on the western shore, visitors can take in a panoramic view of the lake framed by Mt. Meakan and Mt. Akan-Fuji. On calm days, the surface becomes a perfect mirror, reflecting the mountains and sky, while birdsong drifts through the silence of the forest. Walking along the forest trails, visitors are immersed in untouched wilderness. The scent of soil, the rustle of fallen leaves, and soft sunlight filtering through the trees create a deeply tranquil atmosphere, making Lake Onneto a truly unforgettable destination.
- * Please note that the text shown on this page includes machine translations.
- Category
- With friends
- Girls' trip
- Couple
- Travel style
- Activities & Outdoors
- Lake and marsh, waterfall, pond, dam
- Mountain, ridge, plateau, marshland, canyon
- Red leaves, scenic spots, observation platforms
- Natural scenery, spectacular views
- Visit seas, rivers, and lakes
- Travel Inspiration
- Enjoy spectacular views
- Scenic routes
- Nearest airports
General Information
- Postal code
- 〒089-3964
- Address
- 北海道足寄郡足寄町茂足寄
- Telephone Number
- 0156-25-6131（Ashoro Tourism Association）
- Closed
- Closed in winter
- Car Park
- 10 spaces, Free
- Directions
- ●By car: About 50 minutes from Doto Expwy Ashoro IC
●By car: About 100 minutes from JR Kushiro Station - Website
* Information on facilities is subject to change. Please check each official website for the latest information.
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