Lake Mashu Third Observatory
A Celestial View of Twin Cloud Seas over Mashu and Kussharo
Perched at 670 meters, the highest of the three viewpoints, this observatory offers sweeping views of the mystical deep blue waters of Lake Mashu and the vast Kussharo Caldera.
Accessible via Route 52 from Kawayu Onsen, the Lake Mashu Third Observatory offers the highest vantage point over the lake. From the deck, the deep blue waters known as “Mashu Blue” immediately capture your attention. You can look almost directly down into the remarkably clear lake, with mystical Kamuy-shu Island nearby. As the wind sweeps across the cliffs, surrounding Erman’s birch trees rustle softly, while the cool alpine air brushes against your skin.
Turn around to discover a breathtaking panorama of Japan’s largest caldera, the Kussharo Caldera. The view encompasses the rising steam of Mt. Io and the mirror-like surface of Lake Kussharo. In the early morning, sea fog drifting in from the Pacific can settle within the caldera, transforming the landscape into a vast white carpet of clouds. Surrounded by the colors of untamed nature and the sound of wind in the silence, immerse yourself in the primordial beauty of Hokkaido.
- * Please note that the text shown on this page includes machine translations.
- Nearest airports
General Information
- Postal code
- 〒088-3461
- Address
- 北海道川上郡弟子屈町弟子屈原野
- Telephone Number
- 015-482-1530（Lake Mashu Kamui Terrace）
- Closed
- Late November - early April (closed in winter)
- Car Park
- 15 spaces, free
- Directions
- ●By Car: About 20 minutes from JR Kawayu Onsen Station
●By Car: About 70 minutes from Tancho Kushiro Airport - Website
* Information on facilities is subject to change. Please check each official website for the latest information.
