Onneto

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Onneto offers breathtaking scenery, with the crystal-clear lake surface beautifully framed by Mount Meakan-dake and Mount Akan-fuji, creating a picture-postcard view.

Overview

Onneto means "old swamp" or "large swamp" in the Ainu language. It's a barrier lake formed when an eruption of Mount Meakan-dake dammed the Raowan River at its western foot. Japanese fire salamanders and crayfish inhabit the lake. The lake's surface color changes from clear blue to emerald green to dark blue depending on the season, weather, and viewing angle, earning it the nickname "Five-Colored Lake." On calm days, it perfectly reflects Mount Meakan-dake and Mount Akan-fuji, offering a truly magnificent view. A wooden observation deck provides panoramic views. Well-maintained walking trails wind through the surrounding primeval forest, allowing visitors to immerse themselves in untouched nature. Onneto's charm extends beyond its natural beauty to its rich history. The surrounding area boasts various historical sites, including hot springs, waterfalls, and former mine sites, allowing visitors to experience nature and history simultaneously. We recommend allowing ample time to fully explore Onneto at your own pace.

Scenic Views

Basic Information

Address: Onneto, Shimoashibetsu, Ashibetsu-cho, Ashibetsu-gun, Hokkaido Search for tourist attractions in Hokkaido

Access: Approximately 50 kilometers east of Ashibetsu city center. Access is via National Route 241, Hokkaido Prefectural Route 949 (Onneto Line), and Hokkaido Prefectural Route 664 (Moashoro Genya Raowan Ashibetsu Station Line). A portion of Route 664 near Ashibetsu is unpaved and narrow. Some sections are closed during winter. In summer, a bus runs from Akan Lake (30-minute ride). Show route

INFO: Access to Onneto Lake by motorized vehicles, such as powerboats and snowmobiles, is restricted under the Natural Parks Act. To maintain the pristine natural beauty and tranquility of Onneto Lake, we kindly request that you refrain from using non-motorized boats like canoes, or engaging in any watersports, including swimming.