Lake Onneto
Ainu for "old pond," one of Hokkaido's three mystical lakes that changes colors three times
A dammed lake located at the westernmost point of Akan-Mashu National Park, with a circumference of 2.5 km and maximum depth of about 10 meters, formed when the Rawan River was blocked by lava from the eruption of Mt. Meakan.
The lake surface changes color from clear blue to emerald green to dark blue depending on the season, weather, and viewing angle, showing different expressions with each visit. Standing on the observation deck on the west side of the lake, the entire view of Onneto with Mt. Meakan and Mt. Akan-Fuji in the background spreads out, and the spectacular scenery woven by the deep green of the primeval forest and the colors of the lake surface appears before you. On windless days, the lake surface mirrors the mountains like a mirror, with bird calls echoing in the silence.
Walking the trail, you can feel the untouched nature surrounded by primeval forest with your skin. Light filtering through the trees, the scent of forest soil and vegetation, and the sound of stepping on fallen leaves underfoot further enhance the mystical atmosphere of one of Hokkaido's three mystical lakes. Parking is available for about 10 vehicles, and it is closed from mid-December to mid-April.
- * 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 (mid-December to mid-April)
- Car Park
- About 10 spaces, Free
- Directions
- ●By car: About 20 minutes from Lake Akan Bus Terminal
●By car: About 50 minutes from Doto Expwy Ashori IC - Website
* Information on facilities is subject to change. Please check each official website for the latest information.













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